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
Well, how can I make my famous apple pie without cinnamon?
这下好啦 没有肉桂 我那道着名的苹果派怎么做呢
I will come back with him if he asks me.
我会和他走回来，假如他要求我的话。
If no other sate water supply can be obtained,
如果没有其他安全的饮用水，