短语词组短语low -speed pump 低速泵Low -speed winch 慢速绞车low idling speed 低怠速;[车辆]最低空载稳定转速;最低空载转速low idle speed adjustment 低怠速转速调整desired low idle speed 所需发动机低空转转速low idling speed test [车辆]最低空载稳定转速试验low idle speed setting 低怠速调定 返回 low speed