短語詞組短語travel operation speed 行駛工作速度travel motor speed 行駛馬達轉速coefficient of travel -speed variation k 引程速度變化系數(shù)ktravel speed gear 行駛變速齒輪travel speed gauge 行駛速度表travel speed control switch 行駛速度控制開關average overall travel speed 平均行駛速度forward travel speed 曏前行駛速度unexpected travel speed 不利行車速度 返回 travel speed