backward-wave magnetron

例句：

1. 1. The inverted-wave magnetron was used in the early days of television.
   在电视的早期，反向波磁控管被使用。
2. 2.The reversed-wave magnetron is responsible for producing high-frequency signals.
   反向波磁控管负责产生高频信号。
3. 3.The inverted-wave magnetron has been replaced by more efficient alternatives.
   反向波磁控管已被更高效的替代品所取代。