potassium current

例句：

1. 1.The potassium current is essential for nerve function.
   钾电流对于神经功能至关重要。
2. 2. Potassium current is used in the design of batteries.
   钾电流用于电池的设计。
3. 3. The potassium current was found to be responsible for the muscle contractions.
   钾电流被发现是肌肉收缩的原因。