jaw chuck是什么意思

用法例句

This paper analyzes and discusses the construction, working principle and characteristic of general four jaw chuck and centring four jaw chuck by bracing inside diameter for vertical lathe for rough turning of the frame once.

论述立式车床粗车一次机座用的通用四爪卡盘和撑内径定心四爪卡盘的结构、工作原理及特点。