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
Did you know I can type almost 60 words per minuter?
你知道吗，我能每分钟打60个字。
Good words and ill deeds deceive wise and fools.
动听的话和坏行为同样欺骗聪明和愚人。
A huge iceberg was suddenly spotted by a lookout.
突然，了望员发现一座冰山。