three-jaw

三爪

The universal chuck has only three jaws. 万能卡盘只有三个爪。

Ingenious Use of Three Jaw Self-centering Chuck 三爪自定心卡盘的巧用

An Approach into the Correct Setup of a Disc Type Work in a Three Jaw Chuch 盘类工件在三爪夹头中正确安装的探讨

He trudge three hour in the snow to get back home. 他在雪中跋涉三个钟点才回到家。

Our family reunions are always three ring circus. 我家合家团聚的场面总是热闹非凡。

The train arrived on the dot of three o'clock. 那辆火车三点钟准时到达。