constant ratio frequency changer

例句：

1. 1. The constant ratio frequency changer is used to adjust the frequency of the signal.
   恒比频率变换器用于调整信号的频率。
2. 2. In electronics, the constant ratio frequency changer is used to tune the frequency of a radio or televisionsignal.
   在电子学中，恒比频率变换器用于调谐无线电或电视信号的频率。
3. 3. The constant ratio frequency changer was designed to simplify the process of tuning radios and televisions.
   恒比频率变换器的设计旨在简化收音机和电视机调谐过程。