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
who's responsible for this meeting,
他是这个会议的负责人
A standard one. Replacement during the first year if all rules for proper use have been followed.
有一个原则，如果在一年内符合各种使用规定，就可更换。
'I have just arrive in Scotland and I'm staying at a Youth Hostel.'
“我刚到苏格兰，我现住在一家青年招待所。”