frequency discriminating circuit

例句：

1. 1. Thefrequency discriminating circuit is usedto detect the presence of a specific frequencyin a signal.
   频率鉴别电路用于检测信号中特定频率的存在。
2. 2. The frequencydiscriminating circuitwas designed to improve the accuracyof the measurement.
   频率鉴别电路被设计用来提高测量的准确性。
3. 3. The frequencydiscriminating circuitis an essential component of manyelectronic devices.
   频率鉴别电路是许多电子设备的必备组件。