本文引入平面瞬心副（纯滚动副），提出了平面机构结构公式的新含义。

This paper gives a new explanination to the structural formula of plane mechanisms with the help of introducing the rolling pair.

youdao

本文引入平面瞬心副（纯滚动副），提出了平面机构结构公式的新含义。

This paper gives a new explanination to the structural formula of plane mechanisms with the help of introducing the rolling pair.

youdao