Dematron
(=distributed emission magnetron amplifier) 分布放射磁控管放大器, 代码管
🗣️ 情景例句
I would like to send this by registered mail, please.
我想把这封信挂号寄出。
When the sun comes in, the doctor goes out.
阳光入室，医生出屋。
In another chest, which contained the belongings of a ship's officer, there was an unfinished letter which had been written on March 14th, 1943.
另一只海底沉箱中装的是船上一位军官的财物，其中有一封写于1943年3月14日的信，但没有写完。