Ophitron
小型微波发生器, 微波振荡管
🗣️ 情景例句
Hi, Alexandra. Welcome.
嗨 Alexandra。欢迎。
I'm Kathy King.
我是凯西·金。
First of all, it's been improved. And it's bigger, although it's more expensive.
首先，它已作了改进。而且机子较大，尽管价格贵些。