saw-tooth current

例句：

1. 1.The sawtooth current is a type of electric current with a waveform that looks like a sawtooth.
   锯齿形电流是一种电流量，其波形看起来像锯齿。
2. 2.In power systems, the sawtooth current can cause significant damage to electrical components.
   在电力系统中，锯齿形电流会对电气组件造成严重损害。
3. 3. The sawtooth current is often used in transformers to reduce the voltage and increase the frequency.
   锯齿形电流常用于变压器中，以降低电压和提高频率。