squarewave electromagnetic flowmeter

例句：

1. 1. The squarewave signal is used to control the speed of a motor.
   方波信号用于控制电机的速度。
2. 2. The squarewave generator produces a stable output waveform.
   方波发生器产生稳定的输出波形。
3. 3. The squarewave circuit is designed for high-frequency applications.
   方波电路设计用于高频应用。