tick-over低速工作
V(动词) (of an engine) to run at low speed with the throttle control closed and the transmission disengaged (发动机)怠速转动; 空转 (See also idle) [英国英语]
N(名词) the speed of an engine when it is ticking over 空转速度
N(名词) (as modifier) 空转的
tick-over speed