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。
The top plug has a solid body that provides positive indication of contact with the landing collar and bottom plug through an increase in pump pressure.
顶塞具有一个实心的塞体，根据泵压的增加它能可靠地显示与止塞箍和底塞的接触。
First close the plug of a vacuum or pressure meter, if so mounted on the pump, connected to the pump before starting the motor and then open it when the motor move in the normal speed;
如果泵上装有真空表或压力表，要关闭其与泵相连接的旋塞再启动电动机，待转速正常后再打开；
Therefore, the pump flow is easy to plug, plug the pump will pump once does not work, and even burning motor, resulting in poor sewage.
故该种泵流道易于堵塞，泵一旦被堵塞会使泵不能正常工作，甚至烧毁电机，从而造成排污不畅。
The pump-down opening plug is used for continuous cementing operation and in deviated Wells.
顶替型打开塞用于连续式双级注水泥作业，也适用与在斜井中使用。
The pump-down opening plug is used for continuous cementing operation and in deviated Wells.
顶替型打开塞用于连续式双级注水泥作业，也适用与在斜井中使用。
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