我说的分析方法，没说受啥力或力矩的作用。

来源: biglow 于 2016-06-27 06:58:58 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.