当它附着在大鼠心脏时，纳米发电机产生了每3毫伏上下大约30微微安培的电流。
When it was attached to the rat's heart, the nano-generator produced about 30 pico-amps at about three millivolts.
ICDs比心率调整器更先进更复杂，它可以利用小型计算机来感觉电流，对心脏进行监控以决定何时采取治疗性电击。
ICDs are considerably more advanced and complex than pacemakers and use small computers to sense electrical activity, monitor the heart and determine when and how to apply a therapeutic shock.
但是这些通道对于产生心脏跳动的电流来说也是最基本的。
But the channels are also fundamental to the electrical currents which create the heartbeat.
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