大部分活细胞所产生的电流都非常小-常常是需要灵敏的仪器才能进行记录。
The electric currents generated by most living cells are extremely small - often so small that sensitive instruments are needed to record them.
许多生物细胞发出的电流都是极微小的，小到要用灵敏仪器才能记录和测量。
The electric currents generated by most living cells are extremely small – often so small that sensitive instruments are needed to record them.
尖端两边的相的差异使得电流流过尖端，它对于下面分子轨道的相的改变非常灵敏。
That phase difference from one side of the tip to the other makes the current running through the tip sensitive to changes in the phase of the orbital of the molecule below, too.
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