lever

一种能绕一点或轴(支点)转动的刚性部件,其上有两个或多个受力点；用于传递和改变力与运动。

A rigid piece which is capable of turning about one point, or axis (fulcrum), and in which are two or more other points where forces are applied; — used for transmitting and modifying force and motion.

围绕支点转动的刚性杆

a rigid bar pivoted about a fulcrum

用于触发或控制机械装置(如开关或按钮)的小型此类部件。

A small such piece to trigger or control a mechanical device (like a switch or a button).

一种简单机械,有支点时提供机械优势

a simple machine that gives a mechanical advantage when given a fulcrum

一种杆,如绞盘杆,用于转动旋转部件。

A bar, as a capstan bar, applied to a rotatory piece to turn it.

杠杆锁中的平金属制栓

a flat metal tumbler in a lever lock

摇臂轴上的臂,用于驱动轴或从轴获取运动。

An arm on a rock shaft, to give motion to the shaft or to obtain motion from it.