There are more and more power-operated parts on buses, relating to engine, chassis and steering technology, etc.
汽车上的电子控制部件越来越多，涉及到发动机、底盘和车辆行驶控制技术等方面。
2
And there is always a mechanic on stand-by at the back of the car with a power-operated engine starter, ready for instant use if the car stalls.
在赛车尾部总有一个技师手持引擎启动器，随时准备防止赛车熄火。
3
There are four types for PWR pressure-relieving devices: direct acting safety valve, pilot-operated pressure relief valve, power-operated pressure relief valve and safety valve with auxiliaries.