Sentron
防阴极回轰式磁控管(短波电子管), 防阴极反加热式磁控管A-type sentron A型仙台放电管
🗣️ 情景例句
Bon Voyage!
旅途愉快！
There is safety in numbers.
人多势众。
She was not especially pretty. But she was extremely bright.
她不是特别漂亮，但她极聪明。