fixed frequency multivibrator

例句：

1. 1. The fixed frequency multivibrator is used to generate high-frequency signals.
   固定频率多谐振荡器用于产生高频信号。
2. 2. This multivibrator can be used as a simple oscillator for testing purposes.
   这个多谐振荡器可以用来作为简单的振荡器进行测试。
3. 3.The device has a built-in frequency synthesizer that allows it to produce multiple frequencies simultaneously.
   该设备内置了频率合成器，可以同时产生多个频率。