saw teeth wave form

例句：

1. 1. The engineer used a sawtooth waveto control the speed of the machine.
   工程师使用锯齿波来控制机器的速度。
2. 2.The data was recorded in a sawtoothwaveform format.
   数据以锯齿波波形格式记录。
3. 3. The scientist observed the waveswith a sawtooth waveform detector.
   科学家用锯齿波波形探测器观察了这些波。