Barratron
非稳定波型磁控管(用以产生噪音干扰)
🗣️ 情景例句
There are no dues.
不要会费。
Sometimes gain is to lose.
有时得即是失。
The mummy of an Egyptian woman who died in 800 B.C.has just had an operation.
死于公元前800年的一位埃及妇女的木乃伊刚刚接受了一次手术。