single-tuned circuit

例句：

1. 1. The single-tuned circuit is a type of electronic device that uses only one frequency to transmit signals.
   单调电路是一种电子装置，它只使用一种频率来传输信号。
2. 2. In the single-tuned circuit, the signal is transmitted through a series of filters and amplifiers.
   在单调电路中，信号通过一系列滤波器和放大器传输。
3. 3. The single-tuned circuit is widely used in communication systems due to its high efficiency and stability.
   由于其高效率和稳定性，单调电路在通信系统中得到了广泛应用。