维普中文期刊产品整合服务
87篇 您的检索式:作者名="Shaopeng LI"
    题名 作者 年代 出处 被引量
1Variation analyses of growth and wood properties of Larix olgensis clones in China显示文摘The growth traits(tree height, diameter at breast height, and stem straightness degree) and wood properties[wood density(WD), fiber length, fiber width, ash content(AC), lignin content, cellulose content, hemicellulose content(HEC), and holocellulose content] of 208 26-yearold Larix olgensis clones were analyzed. Except for WD and AC, there were significant differences(p \ 0.01) for all traits among clones. The phenotypic coefficient of variation and repeatability of all traits were 9.34–35.33%and 0.218–0.930, respectively. Tree height and diameter at breast height showed significant positive correlation;however, the correlation coefficients among growth characteristics and wood properties were mostly not significant.Ten clones(L70, L56, L82, L90, L59, L91, L61, L92, L86,and L64) were selected as excellent clones under a selection rate of 5%, using tree height, diameter at breast height,and stem straightness degree as evaluation indexes, providing genetic gains of 28.69, 17.96, and 0.67%, respectively. Ten clones(L88, L305, L59, L66, L253, L304,L277, L298, L248, and L293) were selected as excellent clones using wood properties as an evaluation index, with a selection rate of 5%, providing genetic gains in WD, fiber length, fiber width, cellulose content, and HEC of 4.14,3.64, 9.28, 6.77, and 9.61%, respectively. This study provides a theoretical basis for selecting excellent L. olgensis clones.Shaopeng Yin Zhenhai Xiao Guohui Zhao Xin Zhao Xiaoyang Sun Ying Zhang Fuwei Wang Shuchun Li Xiyang Zhao Guan-Zheng Qu 2017Journal of Forestry Research2017,28,4:6
2Process improvement in laser hot wire cladding for martensitic stainless steel based on the Taguchi method显示文摘与低热输入,高精力效率,和高精确的突出的特征,激光热电线 cladding 广泛地被使用因为重新生产的金属分开。然而, cladding 过程需要被使用一个量的方法改善。在这个工作,容量的缺点比率作为标准被建议描述为 cladding 层形成质量的正直。有 FV520B 的激光免职实验, martensitic 不锈钢之一,被使用 Taguchi 方法设计。四个进程变量,也就是激光力量(P) ,扫描速度(V s ), 电线喂率(V f ), 和电线水流(I) ,基于 signal-to-noise (S/N ) 的分析被优化比率。cladding 层的冶金学的观察被进行比较形成的质量并且验证分析方法。有最佳参数联合的稳定、连续的进程与最小的缺点和裂缝生产了一致微观结构,它导致了一个好冶金的结合接口。Zilin HUANG Gang WANG Shaopeng WEI Changhong LI Yiming RONG 2016Frontiers of Mechanical Engineering2016,11,3:5
3Apoptosis in glioma-bearing rats after neural stem cell transplantation显示文摘Abnormal activation of the Ras/Raf/Mek/Erk signaling cascade plays an important role in glioma. Inhibition of this aberrant activity could effectively hinder glioma cell proliferation and promote cell apoptosis. To investigate the mechanism of glioblastoma treatment by neural stem cell transplantation with respect to the Ras/Raf/Mek/Erk pathway, C6 glioma cells were prepared in suspension and then infused into the rat brain to establish a glioblastoma model. Neural stem cells isolated from fetal rats were then injected into the brain of this glioblastoma model. Results showed that Raf-1, Erk and Bcl-2 protein expression significantly increased, while Caspase-3 protein expression decreased. After transplantation of neural stem cells, Raf-1, Erk and Bcl-2 protein expression significantly decreased, while Caspase-3 protein expression significantly increased. Our findings indicate that transplantation of neural stem cells may promote apoptosis of glioma cells by inhibiting Ras/Raf/Mek/Erk signaling, and thus may represent a novel treatment approach for glioblastoma.Hua Li Zhenjun Chen Shaopeng Zhou 2013Neural Regeneration Research2013,8,19:5
4Comparative profiling of the transcriptional response to soybean cyst nematode infection of soybean roots by deep sequencing显示文摘To gain insight into the changes in the transcriptome of soybean roots during soybean cyst nematode (SCN) infection, we conducted genome-wide gene expression profiling using serial analysis of gene expression (SAGE) combined with Solexa sequencing. More than 3 million tags were generated from the SCN-infected and uninfected roots, and 366941 and 314591 clean UniTags were obtained from SCN-infected and uninfected samples, respectively. In the SCN-infected sample, 48249 UniTags represented 18114 reference genes. In the uninfected control, 46290 UniTags represented 19323 reference genes. Comparison of tag frequencies identified 1405 genes that were expressed at greater levels in SCN-infected roots than in uninfected roots, and 1191 genes that were expressed at lower levels. Quantitative real-time PCR analyses confirmed the changes in mRNA levels observed in our sequencing analyses. A comparable number of genes were upand down-regulated in response to nematode infection, indicating that down-regulation of some genes might be essential in the plant response to nematodes. Our SAGE results showed significant changes in expression of many unreported genes involved in nematode infection. Approximately 7% of tags mapped to the antisense strand of genes, indicating widespread antisense transcription.LI XiaoYan WANG Xue ZHANG ShaoPeng LIU DaWei DUAN YuXi DONG Wei 2011Chinese Science Bulletin2011,56,18:5
5Self-monitoring Application of Asphalt Concrete Containing Graphite and Carbon Fibers显示文摘用间接张力的测试和车轮滚动测试包含石墨和碳纤维的沥青水泥的自我监视的申请被介绍。实验结果显示那这种基于沥青合成为紧张 / 压力是有效的自我监视。在间接张力的测试,为一个完全传导性的沥青水泥标本, piezoresistivity 很弱、稍微确定,它与张力的紧张的增长意味着抵抗力增加根本象 6 一样高压力 / 紧张振幅,与抵押品因素。紧张自我察觉到的能力在更高的石墨内容的情况中是优异的。当传导性的水泥作为部分结构功能被嵌进普通沥青水泥标本时, piezoresistivity 根本不管多么是积极的压力 / 紧张振幅并且与抵押品 13 的因素,它比完全传导性的标本的高得多。因此,紧张当传导性的沥青水泥作为部分结构功能被收进时,自我察觉到的能力是优异的。在滚动车轮的测试, piezoresistivity 是高度积极的。在任何压力振幅, piezoresistivity 象 100 一样高强壮,与抵押品因素,它比 0.5 MPa 的为 0.7 MPa 的一个压力振幅是更高的。LIU Xiaoming WU Shaopeng LI Ning GAO Bo 2008Journal of Wuhan University of Technology(Materials Science)2008,23,2:4
6Progress and key challenges in catalytic combustion of lean methane显示文摘As a primary type of clean energy,methane is also the second most important greenhouse gas after CO_(2)due to the high global warming potential.Large quantities of lean methane(0.1–1.0 vol%)are emitted into the atmosphere without any treatment during coal mine,oil,and natural gas production,thus leading to energy loss and greenhouse effect.In general,it is challenging to utilize lean methane due to its low concentration and flow instability,while catalytic combustion is a vital pathway to realize an efficient utilization of lean methane owing to the reduced emissions of polluting gases(e.g.,NOxand CO)during the reaction.In particular,to efficiently convert lean methane,it necessitates both the designs of highly active and stable heterogeneous catalysts that accelerate lean methane combustion at low temperatures and smart reactors that enable autothermal operation by optimizing heat management.In this review,we discuss the in-depth development,challenges,and prospects of catalytic lean methane combustion technology in various configurations,with particular emphasis on heat management from the point of view of material design combined with reactor configuration.The target is to describe a framework that can correlate the guiding principles among catalyst design,device innovation and system optimization,inspiring the development of groundbreaking combustion technology for the efficient utilization of lean methane.Xiangbo Feng Lei Jiang Danyang Li Shaopeng Tian Xing Zhu Hua Wang Chi He Kongzhai Li 2022Journal of Energy Chemistry2022,,12:4
7Genome research profile of two Cordyceps sinensis cDNA libraries显示文摘Cordyceps sinensis (CS) is well known as an ancient Chinese herb. It is used to expand bronchial smooth muscles, inhibit tumor growth and decrease blood pressure. Cordyceps sinensis is composed of two parts. One is the dead larvae body; the other is the stroma like withered grass. Up to now, few genome database articles about Cordyceps sinensis have been reported. In this study, two cDNA libraries were constructed using the worm part and grass part respectively for the first time. 12192 and 15456 clones from the worm-part (CSCA) and grass-part (CSBA) library were respectively picked. Sequences derived from CSCA were clustered into 1333 contigs and 2469 singlets, while those from CSBA were clustered into 1297 contigs and 2875 singlets. These ESTs include sequences representing a significant portion of proteins encoding genes in cell signalling, metabolism, information storage and processing. Some enzymes encoding genes were also found and linked with CS’s physiology such as proteases, peptidases, lipases and chitinase. Pairwise comparison between the two cDNA libraries was also studied. Some ESTs were found only in CSCA and some only in CSBA. Finally, a comparative genomics research was performed with Fusarium graminearum, Aspergillus nidulans, Neurospora crassa and Saccharomyces bayanus. The results indicate that the fungus’ genes maybe have complicated variation at the nucleic acid level, but the proteins translated are still conservative.ZHANG ShaoPeng FENG Hui LI XiaoYan JIN YongSan DONG Wei 2010Chinese Science Bulletin2010,55,14:4
8Superresolution imaging of telomeres with continuous wave stimulated emission depletion (STED) microscope显示文摘The significant role of telomeres in cells has attracted much attention since they were discovered.Fluorescence imaging is an effective method to study subcellular structures like telomeres.However,the diffraction limit of traditional optical microscope hampers further investigation on them.Recent progress on superresolution fluorescence microscopy has broken this limit.In this work,we used stimulated emission depletion(STED) microscope to observe fluorescence-labeled telomeres in interphase cell nuclei.The results showed that the size of fluorescent puncta representing telomeres under the STED microscope was much smaller than that under the confocal microscope.Two adjacent telomeres were clearly separated via STED imaging,which could hardly be discriminated by confocal microscopy due to the diffraction limit.We conclude that STED microscope is a more powerful tool that enable us to obtain detailed information about telomeres.Shaopeng Wang Suhui Deng Xiaoqing Cai Shangguo Hou Jiajun Li Zhaoshuai Gao Jiang Li Lihua Wang Chunhai Fan 2016Science China Chemistry2016,59,11:3
9Carbonaceous matter in glacier at the headwaters of the Yangtze River:Concentration,sources and fractionation during the melting process显示文摘Carbonaceous matter has an important impact on glacial retreat in the Tibetan Plateau,further affecting the water resource supply.However,the related studies on carbonaceous matter are still scarce in Geladaindong(GLDD)region,the source of the Yangtze River.Therefore,the concentration,source and variations of carbonaceous matter at Ganglongjiama(GLJM)glacier in GLDD region were investigated during the melting period in 2017,which could deepen our understanding on carbonaceous matter contribution to glacier melting.The results showed that dissolved organic carbon(DOC)concentration of snowpit samples(283±200μg/L)was much lower than that of precipitation samples(624±361μg/L),indicating that large parts of DOC could be rapidly leached from the snowpit during the melting process.In contrast,refractory black carbon(rBC)concentration measured by Single Particle Soot Photometer of snowpit samples(4.27±3.15μg/L)was much higher than that of precipitation samples(0.97±0.49μg/L).Similarly,DOC with high mass absorption cross-section measured at 365 nm value was also likely to enrich in snowpit during the melting process.In addition,it was found that both r BC and DOC with high light-absorbing ability began to leach from the snowpit when melting process became stronger.Therefore,rBC and DOC with high light-absorbing ability exhibited similar behavior during the melting process.Based on relationship among DOC,rBC and K^+ in precipitation,the main source of carbonaceous matter in GLJM glacier was biomass burning during the study period.Zhaofu Hu Shichang Kang Xiaobo He Fangping Yan Yulan Zhang Pengfei Chen Xiaofei Li Shaopeng Gao Chaoliu Li 2020Journal of Environmental Sciences2020,32,1:3
10Ethylenediamine promoted the hydrogenative coupling of nitroarenes over Ni/C catalyst显示文摘Azobenzene and its derivatives are key raw materials and it is an environmentally friendly method for the preparation of azobenzene by hydrogenative coupling of nitrobenzene. The development of nickel based catalyst for organic transformations is of importance because of its relatively low cost and toxicity. In this work, we found that ethylenediamine can enrich the electron state of Ni and make the azobenzene easily desorb from the surface of the catalyst, which inhibits the hydrogenation of azobenzene to aniline. The selectivity of azobenzene is greatly improved. When the ratio of Ni and ethylenediamine is 1:10, the yield of the azobenzene can reach 95.5%.Youdi Yang Shaopeng Li Chao Xie Hangyu Liu Yanyan Wang Qingqing Mei Huizhen Liu Buxing Han 2019Chinese Chemical Letters2019,30,1:3
11Fretting wear behaviour of machined layer of nickel-based superalloy produced by creep-feed profile grinding显示文摘Fretting wear has an adverse impact on the fatigue life of turbine blade roots.The current work is to comparatively investigate the fretting wear behaviour of the nickel-based superalloy surfaces produced by polishing and creep-feed profile grinding,respectively,in terms of surface/subsurface fretting damage,the friction coefficient,wear volume and wear rate.Experimental results show that the granulated tribolayer aggravates the workpiece wear,while the flat compacted tribolayer enhances the wear resistance ability of workpiece,irrespective of whether the workpiece is processed by polishing or grinding.However,the wear behaviors of tribolayers are different.For the polished surface,when the normal load exceeds 100 N,the main defects are crack,rupture,delamination and peeling of workpiece materials;the wear mechanism changes from severe oxidative wear to fatigue wear and abrasive wear when the loads increase from 50 to 180 N.As for the ground surface,the main wear mechanism is abrasive wear.Particularly,the ground surface possesses better wear-resistant ability than the polished surface because the former has the lower values in coefficient friction(0.23),wear volume(0.06×10^(6)μm^(3))and wear rate(0.25×10^(-16)Pa^(-1)).Finally,an illustration is given to characterize the evolution of wear debris on such nickel-based superalloy on the ground surface.Weijie KUANG Qing MIAO Wenfeng DING Yanjun ZHAO Biao ZHAO Xuebing WEN Shaopeng LI 2022Chinese Journal of Aeronautics2022,35,10:3
12Insight into the formation mechanism and interaction of matrix/TiB whisker textures and their synergistic effect on property anisotropy in titanium matrix composites显示文摘Considerable studies on processed pure titanium and titanium alloys have proved the possibility of prop-erty anisotropy induced by crystallographic textures,but limited information is available for the intrinsic coupling of matrix and reinforcement textures and their synergistic effect on property anisotropy in tita-nium matrix composite(TMCs).In the present work,an advanced EBSD/EDS coupling method was used to investigate the formation mechanism of primaryαand secondaryαtextures in the matrix alloy.It is revealed for the first time that the reinforcement TiB_(w)displays a{100}<010>texture after hot rolling and has little effect on the matrix texture component but weakens texture intensity.Significant anisotropies in the tensile strength and ductility can be all noted at room and high-temperatures,which is the syn-ergistic effect of the matrix texture and the aligned TiB_(w).The mean Schmid factor of each slip system was calculated to evaluate the influence of matrix texture on the minimum active stress of slip deforma-tion in the different tensile directions.The analysis shows that the strong T-type matrix texture results in higher strength but lower ductility when loaded in the transverse direction.Moreover,a generalized shear-lag model was modified to quantitatively evaluate the strengthening contribution of aligned TiB_(w),which decreases with increasing off-axis angle and test temperature.A new parameter,defined as the critical aspect ratio of the off-axis whisker,was proposed to rationalize why the TiB_(w) failure mechanism converts from TiB_(w) fracture to TiB_(w)/matrix interfacial debonding with increasing off-axis angle and test temperature.Jianwen Le Yuanfei Han Peikun Qiu Shaopeng Li Guangfa Huang Jianwei Mao Weijie Lu 2022Journal of Materials Science & Technology2022,,15:2
13Evaporite minerals and geochemistry of the upper 400<ce:hsp sp='0.25'/>m sediments in a core from the Western Qaidam Basin, Tibet显示文摘Minghui Li Xiaomin Fang Chaolu Yi Shaopeng Gao Weilin Zhang Albert Galy 2009Quaternary International2009,,1:2
14Enhancing the power conversion efficiency of PCDTBT:PC_(71)BM polymer solar cells using a mixture of solvents显示文摘Organic polymer solar materials are shown to exhibit better solubility in mixed solvents than in pure ones,which affects the performance of their solar cells.In this article,poly[N-9-hepta-decanyl-2,7-carbazole-alt-5,5-(4.7-di-2-thienyI-2,l,3-benzothiadiazole)(PCDTBT0)and[6,6]-phenyl-C71-butyric acid methyl ester(PC_(71)BM)are used as active layer materials in solar cells.To optimize the performance of these active materials,the ratio of chloroform(CF)to chlorobenzene used as solvents to dissolve PCDTBT,and PC_(71)BM is varied,which is shown to affect power conversion efficiency(PCE).The solar cell that shows the best performance with a PCE as high as 6.82%is produced using a volume ratio of CF to chlorobenzene of1:1.Shaopeng Yang Ye Zhang Tao Jiang Xuefeng Sun Chaoqun Lu Guang Li Xiaowei Li Guangsheng Fu 2014Chinese Science Bulletin2014,59,3:2
152 K superfluid helium cryogenic vertical test system for superconducting cavity of ADS Injector I显示文摘Purpose The accelerator-driven subcritical system(ADS)is the internationally recognized key technology of nuclear waste problem treatment,of which superconducting proton linac is an important part.With the support of the strategic science and technology pilot project of the Chinese Academy of Sciences,the Institute of High Energy Physics of the Chinese Academy of Sciences took the lead in the research of 325 MHz superconducting proton linac,which is called ADS Injector I.The superconducting accelerator part of ADS Injector I mainly consists of 14 spoke-type superconducting cavities withβ0.12.At the same time,the research work of various cavities with differentβvalues and different frequencies is also carried out to lay the technical and technological foundation for ADS main accelerator.The only way to determine whether the superconducting cavity can reach the design target and whether it can be installed into the cryostat is the vertical test at cryogenic.As the only way to test the microwave performance of the superconducting cavity at low temperature,the vertical test can accurately test the acceleration gradient Eacc and the corresponding quality factor Q0 of the superconducting cavity.The design and construction of the superconducting cavity vertical test facility is based on the practical needs of the pilot project and the long-term development of the superconducting accelerator.Methods This paper mainly introduces the design and construction of the cryogenic vertical test system for the superconducting cavity of ADS Injector I,including the system scheme design,process design,heat load analysis,2 K superfluid helium obtaining method,system commissioning and operation,etc.Results and Conclusion The static heat leakage at 2 K of the 2 K superfluid helium vertical test system of ADS Injector I is 1.624W,which has reached the international advanced level.The 2 K superfluid helium vertical test system of ADS Injector I after constructed not only meets the test requirements of ADS pilot project,but also conducts 4 K and 2 K vertical tests for other different types of superconducting cavities and relevant cryogenic experiments.Rui Ge Liangrui Sun Miaofu Xu Rui Ye Xiangzhen Zhang Minjing Sang Ruixiong Han Zhuo Zhang Jiehao Zhang Lin Bian Mei Li Changcheng Ma Tongxian Zhao Yongcheng Jiang Zhengze Chang Shaopeng Li 2020Radiation Detection Technology and Methods2020,4,2:2
16Dynamic recrystallization and phase transformation behavior of a wroughtβ-γTiAl alloy during hot compression显示文摘The dynamic recrystallization(DRX)and phase transformation(PT)behavior of a wroughtβ-γTiAl alloy during hot compression under various deformation temperatures were investigated.The typical work hardening and flow softening features indicated that DRX was the dominating softening mechanism.Both y-DRX andβ-DRX took place during the hot compression.y-DRX was triggered at all compression temperatures,while theβ-DRX was induced when the compression temperature was above 1000℃.The hot deformation kinetics was calcu-lated,which showed that DRX behavior existed in the whole hot compression process,and the DRX volume fraction increased with the increase of the compression temperature.Combined with the microstructure ob-servation,it concluded that theβ/B2+a2-+y PT occurred at 850℃and 1000 C,while theγ-+β/B2 PT hap-pened at 1050℃during hot compression,which is important to optimize microstructure.Moreover,the hot compression mechanism changed from dislocation gliding to grain-boundary sliding was discussed.Lei Zhu Jinshan Li Bin Tang Fengtong Zhao Ke Hua Shaopeng Yan Hongchao Kou 2020Progress in Natural Science:Materials International2020,30,4:2
17A hypothesis for crack free interior surfaces of Longyou caverns caved in argillaceous siltstone 2000 years ago显示文摘Five complete caverns were discovered in Longyou in 1992.They were manually caved in argillaceous siltstone at shallow depths more than 2000 years ago.When they were un-watered,their integrity was maintained completely,and their interior rock surfaces were free of old cracks.Since then,however,the rock's interior faces have initiated and propagated more and more cracks.This paper attempts to address the question of why the rock interior faces were free of old cracks once they were unearthed.To address this question,this paper proposes a hypothesis that the argillaceous siltstone has the ability of self-healing its cracks over a short period of time under weak acid water environment.Data and evidence are presented herewith to prove the hypothesis.They include observations and measurements in the field and test results in the laboratory.Specifically,a three-point bending test is used to form a tensile crack in a rectangular rock specimen and a deadload test for the specimen immersed in initially weak acid water is used for self-healing its crack.The results have shown that the argillaceous siltstone is in a state of weak alkalinity and the rain water at the site is in a state of weak acidity.Therefore,when it is immersed in weak acid water for some time,the argillaceous siltstone would be able to make chemical reactions to generate new minerals such as calcite.The new minerals would be able to infill the cracks and then heal the crack within a few years.Once the crack is self-healed,the rock can regain its strength and integrity.Consequently,the rock interior surfaces could be free of old cracks when the water was pumped out of the caverns.Zhong Qi YUE Shaopeng FAN Zhifa YANG Lihui LI Luqing ZHANG Zhongjian ZHANG 2010Frontiers of Structural and Civil Engineering2010,4,2:2
18The relationship between fracture toughness of CO 2 corrosion scale and corrosion rate of X65 pipeline steel under supercritical CO 2 condition显示文摘Yucheng Zhang Xiaolu Pang Shaopeng Qu Xin Li Kewei Gao 2011International Journal of Greenhouse Gas Control2011,,6:2
19Photo-Isomerization Energy Storage Using Azobenzene and Nanoscale Templates: A Topical Review显示文摘Azobenzene(AZO) has attached tremendous attention in the field of photo-isomerization energy storage due to its advantages of absorbing light in ultraviolet-visible range and reversible isomerization. However, the issues of low energy density and short half-lifetime restrict the further development of AZO. Therefore, a method, by preparing hybrid photo-isomerization energy storage materials using nanoscale templates, was proposed to handle the above two issues. In this paper, a summary of hybrid photo-isomerization energy storage materials with AZO and nanoscale templates is conducted from the aspects of templates, preparation methods, derivatives and applications. The performances of template candidates, i.e. carbon nanotubes(CNTs) and graphene(GO) are reviewed and compared based on the analysis of grafting density, energy density, and half-lifetime of hybrid materials. Then, two major preparation methods of AZO hybrid materials including non-covalent and covalent functionalizations are discussed. Furthermore, the studies on AZO derivatives functionalized on nanoscale templates are summarized to further point to the direction of derivatization towards high performance AZO-functionalized materials. Finally, due to the superiority of AZO hybrid solid-state films in large-scale utilization, their current applications are reviewed to find out some promising applications.LI Shuwei WANG Hongqiang FANG Juan LIU Qibin WANG Jiangjiang GUO Shaopeng 2020Journal of Thermal Science2020,29,2:2
20Roles of Te and Mn in the two phases of manganite with nominal composition La_(0.6)Sr_(0.1)Te_xMnO_3显示文摘Powder samples with nominal composition La0.6Sr0.1TexMnO3 (x = 0.00, 0.05, 0.10, 0.15, 0.20) were prepared using the sol-gel method with thermal treatment up to 1473 K. On the basis of powder X-ray diffraction (XRD), thermogravimetric and magnetic measurements, it was found that almost all of the Te and a few of the Mn ions were lost from the samples when they were calcined at 1473 K. The reason for the Te loss and a quantitative phase analysis for the samples calcined at 1473 K are discussed in detail.LI Yanfeng JI Denghui ZHAO Zhiwei TANG Guide LIU Shaopeng ZHANG Yuge LI Zhuangzhi HOU Denglu ZHU Minggang 2011Rare Metals2011,30,3:2
返回顶部 每页显示:
共5页 首页 上一页 第1页 下一页 末页 /5 跳转

网站首页 | 关于我们 | 联系我们 | 产品服务 | 客服中心 | 广告服务 | 版权声明 | 网站联盟 | 友情链接 | 售卡网点

版权所有© 渝B2-20050021-1 渝公网安备 50019002500403号 违法和不良信息举报中心

互联网出版许可证 新出网证(渝)字10号 全国400电话 - 免长途话费