Atmospheric pressure then pushes the piston back down the cylinder, and if anything (such as a pump) is attached to the piston, some useful work can be done.
于是,气压就会再次将活塞推至汽缸底部。而假如有诸如水泵这样的物体与活塞连接,就可以在活塞的带动下完成一些工作。
Plug-in hybrids, meanwhile, could charge at night, when demand is low, and even pump power back to the grid while parked during the day.
同时,当夜晚用电低谷时,可以利用混合动力装置充电(译注:wikipedia),甚至可以在白天再把电力传输回电网里。
I back my car up to the next pump, hurry to get away from her.
为了躲她远点,我匆匆调转车头向下一个油泵驶去。
应用推荐