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
I don't know what you are driving at.
我不知道你到底想说什么。
Pitchers have ears.
隔墙有耳。
It's seven twenty-five.
七点二十五了。