1. The beating of heart induces alternating currents in the surrounding tissues. 心脏的搏动在其周围组织中感应出交流电流。
2. The present form of power systems would be impossible without alternating current. 若没有交流电也就不可能有目前形式的电力系统。
3. Continuously reciprocating piston movement the water pump and water pressure on the continuous process of alternating. 活塞不断往复运动,泵的吸水与压水过程就连续不断地交替进行。
英英解释
adj.
1. (of a current) reversing direction
2. occurring by turns; first one and then the other