tuning signal

例句：

1. 1. The tuningsignal is crucial for the proper operation of the radio.
   调谐信号对于收音机的正确操作至关重要。
2. 2. The engineer tuned the signal to match the receiver's frequency.
   工程师调整了信号的频率以匹配接收器的频率。
3. 3.In order to maintain a stable connection, the signal needs to be precisely tuned.
   为了保持稳定的连接，信号需要精确调谐。