本文证明该观点是错误的，同时对分离杠杆进行了受力分析。

In this paper, it will has been certified that this idea is false. At same time, the analysis for the lever will has been done.

youdao

本文证明该观点是错误的，同时对分离杠杆进行了受力分析。

In this paper, it will has been certified that this idea is false. At same time, the analysis for the lever will has been done.

youdao