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.
当连接到大鼠的横隔膜时，该动物的呼吸使纳米线得到伸展，并产生少量的电力——每两毫伏约4微微安培电流。
When attached to the rat's diaphragm, the animal's breathing stretched the nanowire, and it generated a tiny amount of electricity — about four pico-amps of current at two millivolts.
大鼠发电机以毫微微瓦级在运转（1微微安培是1安培的亿万？ 分之一），因此它只是极少量的电流，产生不了多少电力。
The rat generator operates at the femtowatt scale -- a pico-amp is a million millionth of an amp, so it is a tiny amount of current -- so not very much power.
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