throw-over motion

• 回转

throw-over motion的用法和样例：

例句

1. The rotor cataracts water over the top of the machines.
   回转轴将水从机器顶上注入。
2. The crank in a steam engine is used to produce rotary motion.
   蒸汽机里的曲柄是用来产生回转运动的。