Spiratron
旋束管(离心静电聚焦行波管), 径向聚束行波管, 螺旋管
🗣️ 情景例句
How can I get in touch with you?
我怎样和你联系呢？
If it's not too much trouble, I would like some help.
如果你不嫌麻烦的话，我想请你帮个忙。
I'm tired of working all day.
整日工作使我厌烦。