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The Research of Dimensional Design “2MM Project” System and the Key Role in the Self-owned Vehicle P
The related concepts of dimension "2MM" engineering of the automotive products are introduced.The dimension design "2......
验证机械能守恒是一个非常重要的实验,可是很久以来对实验中要求第一、二两点距离为2m的要求有很多争论。在这里我发表一下自己的......