crank arm

基本解释

Turn the wiper module over and remove the nut that secures the wiper motor crank arm to the wiper motor output shaft .
转动雨刷模组盖，并拆下将雨刷马达曲柄臂固定于雨刷马达输出轴上的螺帽。
Rotary Actuator design utilizes two independent piston cylinders, each piston has a crank arm attached to a crankshaft.
在 RW系列旋转式驱动器设计采用两个独立的活塞筒，每个活塞有曲柄连接曲轴臂。
Aim to the serious subfilling of the crank arm, the construction of"constrained wing"was presented to form the favorable die filling instead of increasing the forging size.
提出“约束翼”新型结构，对曲柄臂严重缺料的情况下，在不增加锻件的下料尺寸，成形质量良好的曲轴锻件；

It survived 250, 000 rotations of the crank arm, what would come with about a decade of heavy use.
FORBES: Spinning Wheels