例句與造句

1. Analysis , modeling and simulation were performed on the electric - hydraulic proportional variable - capacity pump and variable - displacement motor system
   對(duì)電液比例變量泵和變量馬達(dá)系統(tǒng)進(jìn)行了分析、建模與仿真。
2. It's difficult to find variable-displacement motor in a sentence. 用variable-displacement motor造句挺難的