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[期刊论文] 作者:WANG Mili,PU Qingyu,LIU Chengl, 来源:地质学报(英文版) 年份:2004
Since the middle Early Pleistocene (1.20 Ma B.P.), the desert steppe climate and environment have predominated in the Lop Nur area, Xinjiang, characterized by w...
[期刊论文] 作者:CHEN Deling,CHEN Li,YIN Chengl, 来源:机械工程学报(英文版) 年份:2004
An active front steering (AFS) intervention control during braking for vehicle stability is presented. Based on the investigation of AFS mechanism, a simplified...
[期刊论文] 作者:Qin Shuren,Chen Zhikui,Xu Ming, 来源:机械工程学报(英文版) 年份:2004
Sampling principle and characteristics and edge effect of orthogonal wavelet transform of signals are researched. Two samples of signals and wavelet bases must...
[期刊论文] 作者:LIN Ning,林新,DEN Zhikui, 来源:检验医学 年份:2004
目的 探讨强直性脊柱炎(AS)患者血清基质金属蛋白酶-1、3、9(MMP-1、3、9)水平及意义.方法 采用双抗体夹心酶联免疫吸附试验(ELISA)测定45例As患者和31例正常对照者的血清MMP...
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