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
Television is the most powerful tool of persuasion that man has ever created.
电视是人类所创造的最有威力的游说工具。
You're hopeless!
你真是没救了！
All night long, people dance and sing.
整个夜晚人们载歌载舞。