理论耗功分析P2 2H310VT22a2T130P0mrmS每生产1 kg压缩气体:w_c=w_ct^2+w_c -1+”R-1n-1Pa+-2Pa令awc=0⇒p_a=√(p_1)⋅p_2或π_2=(P_2)/r=(P_2)/r=π_k =P1 Pa推广:若m级,则π_1=π_2=⋯=π_m= w_c=w_(cmin)讨论:按π_i= T_i=√((p_2)/(p_p))选择...
DNA was extracted from the Neandertal-type specimen found in 1856 in western Germany. By sequencing clones from short overlapping PCR products, a hitherto ... Matthias,Krings,and,... - 《Cell》 被引量: 1734发表: 1997年 A view of Neandertal genetic diversity The retrieval of mitochondrial D...
来自 国家哲学社会科学文献中心 喜欢 0 阅读量: 1 作者: 郭剑华 摘要: 武术的性质和特点决定了武术课的教学形式有别于其它体育门类的教学.它内容的多样性和复杂性决定了学生要有一定的协调感;它的动作的难度感和特有的意识节奏感决定了学生要有一定的基本功. 年份: 2001 ...
发明人: BECK, ERHARD, BAD RAPPENAU, DE 摘要: the invention relates to a verschiebesicherung for verbaugerte to rohrverschlüssen in a leak test or perimeter in kontrollschacht of sewers and pipes with torque through dry running friction material收藏...
B Alain,T Audrey 被引量: 0发表: 2018年 Mascara brush The present invention provides a mascara brush which, when an application liquid is applied with the front ends of brush bristle materials, can apply a large amount of the application liquid held in the mascara brush without being rotate....
PURPOSE:To improve work efficiency by providing multiple support holes on the stanchion of a fixed frame, replacing fixing pins inserted into the support holes, lowering a lifting jack in stages, and press-fitting a well into the ground. CONSTITUTION:A lifting jack 5 is lowered along a rod 6...
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