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
He ran the drugstore
他经营药房
Have you been busy with schoolwork?
学校的功课很忙吗？
I thought he must have misunderstood me, so I repeated its name.
我想他一定误解了我的意思，于是又说一遍村庄的名字。