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[期刊论文] 作者:DONG Hanwu,WANG Lidong,WU Yaom, 来源:稀土学报(英文版) 年份:2004
Mg-6Li and Mg-6Li-1Y (wt.%) alloys were prepared using permanent model casting method,and microstructure...
[期刊论文] 作者:LI Yaming,WANG Fengli,ZHANG Mi, 来源:稀土学报(英文版) 年份:2004
The electrochemical preparaton of Al-Li-Y alloys from LiCl-KCl-A1Cl3-Y2O3 system was studied....The chlorination of Y2O3 by AlCl3 led to the formation of Y (Ⅲ) i...
[期刊论文] 作者:DongNing, 来源:今日中国:英文版 年份:2004
ALL of Li Changxing's photographs are of nature, a constant theme that makes him more a romantic...
[期刊论文] 作者:WangJunjiang, 来源: 年份:2004
The theory of growing up in spirit is the core of Li Zhi's thought.The theory attempts to get rid...
[学位论文] 作者:李中意,, 来源:大连理工大学 年份:2004
锂硫电池因其有1675mAh/g的理论高容量而成为一种有前景的电化学电池,硫正极反应完全生成Li2S时,化学反应方程式为:16Li+S8→8Li2S。众所周知,它的放电机制是一个复杂多步的...
[期刊论文] 作者:, 来源:China\'s Foreign Trade 年份:2004
China's focus on the sustainable development and efficient usage of natural resources echoes Daimler-Chrysler...'s idea of long-term growth, Li Jie, Vice-President...
[期刊论文] 作者:, 来源:China Today 年份:2004
ALL of Li Changxing’s photographs are of nature, a constant theme that makes him more a romantic lyricist...
[期刊论文] 作者:, 来源:China\'s Foreign Trade 年份:2004
Rcently,Li Zhongming,President of Eastern AirGroup Company andChairman of China Eastern Airlines(CES)...
[期刊论文] 作者:ChenBo JiangYongguang HuBo Liu, 来源:中医药学刊 年份:2004
Analyzing systemically more than 550 Li Dong Yuan's formula of spleen and stomach by using the association...
[期刊论文] 作者:YANG Mingzhu,SUI Yu,MU Haiwei, 来源:稀土学报(英文版) 年份:2004
Er3+ and Li+ codoped Y3Al5O12 (YAG) powders were prepared for a systematic investigation of their upconversion...
[期刊论文] 作者:Qinhua Gu,Ming Lu,Junnan Chen,Yujie Qi,Bingsen Zhang, 来源:颗粒学报(英文版) 年份:2004
Lithium-sulfur(Li-S)batteries are promising candidates for high density electrochemical energy storage...systems.However,the poor conductivity of S and the shuttl...
[期刊论文] 作者:李瑞红,潘复生,蒋斌,殷恒梅,刘婷婷, 来源:中国有色金属学报(英文版) 年份:2004
在氩气保护气氛下,熔炼Mg-14Li-1Al(LA141),LA141.0-3Y、LA141.0-3Sr和LA141-0.3Y-0.3Sr合金.通过扫描电镜(SEM)、X-射线衍射(xRD)和能谱分析研究这几种合金的组织...
[期刊论文] 作者:彭晓东,李俊辰,李文娟,杨艳,魏群义,, 来源:稀有金属材料与工程 年份:2004
采用光学显微镜、SEM扫描电镜、XRD以及力学性能和电化学测试等手段,研究了不同Y含量对Mg-9Li-3Al合金组织、力学性能和腐蚀性能的影响。结果表明:随着Y的添加,α相的形貌逐...
[期刊论文] 作者:李志宏,柳卫平,白希祥,郭冰,连钢,颜胜权,王宝祥,陆昀,曾, 来源:原子核物理评论 年份:2004
利用8Li次级束测量了质心系能量7.8 MeV 2H(8Li, 9Li)1H反应的角分布, 导出了8Li(d, p)9Li反应的天体物理S因子及9Li→8Li+n虚衰变的渐近归一化系数....
[期刊论文] 作者:刘炳文,段锋,张月莲, 来源:湖南文理学院学报:自然科学版 年份:2004
研究了如下两类广义Liénard系统:dx/dt=p(y),dy/dt=-f(x)q(y)-g(x),(E);dx/dt=p(y),dy/dt=-h(x,y)q(y)-g(x),(E′)解的有界性与周期解的存在性...
[期刊论文] 作者:, 来源:In Each Issue 年份:2004
The traditional Li textile techniques of spinning,dyeing,weaving and embroidering are employed by women...of the Li ethnic group in south China's Hainan Province,...
[学位论文] 作者:高建楠,, 来源:华南理工大学 年份:2004
本文以Y地产公司S项目作为研究案例,针对Y地产公司净利润率连年下降的实际问题,通过对S项目的开发成本进行控制研究,对Y地产公司成本控制存在的问题进行分析,提出以挣值法作...
[期刊论文] 作者:钟理,齐明,韦国林,罗京莉,K. Chuang, 来源:中国化学工程学报(英文版) 年份:2004
A laboratory-scale intermediate-temperature H2S fuel cell with a configuration of H2S, (metal sulfide-based...composite anode)/Li2SO4+Al2O3/(NiO-based composite c...
[期刊论文] 作者:, 来源:China\'s Foreign Trade 年份:2004
During the interview,NPC Deputy,Vice Secretary of the Municipal Committee and Mayor of Yan Cheng,Li Qiang...
[期刊论文] 作者:Deng Zhaoxiang,QIU Wenfeng,LI, 来源:科学通报 年份:2004
Nitriles were unexpectedly trimerized into s-triazines or amino-pyrimidines in high yields in the presence...of catalytic amount of Li3N, resulting in a simple, s...
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