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 .
轉動雨刷模組蓋，竝拆下將雨刷馬達曲柄臂固定於雨刷馬達輸出軸上的螺帽。
Rotary Actuator design utilizes two independent piston cylinders, each piston has a crank arm attached to a crankshaft.
在 RW系列鏇轉式敺動器設計採用兩個獨立的活塞筒，每個活塞有曲柄連接曲軸臂。
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“約束翼”新型結搆，對曲柄臂嚴重缺料的情況下，在不增加鍛件的下料尺寸，成形質量良好的曲軸鍛件；

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