Backward wave tube
[电] 道波管
🏥 医学释义
返波管
🧩 词语组成解析
wave
[wev]
n. 波浪，波动;挥手;涌现的人（或事物）;汹涌的行动（或思想）态势;
vi. 摇摆，起伏;
vt.& vi. （一端固定地）飘扬;挥手指引;挥动…示意;略呈波形;
vt. 挥手表示;挥舞;使…略呈波形;烫（发）;
🗣️ 情景例句
Stone's bilingual ability and his work experience were the qualities that helped him get the job over all the other candidates.
世通的双语能力和他的工作经验使他胜过其他候选人获得这份工作。
The college was established in 1940.
该学院建立于1940年。
it must be known to any kind of radio astronomer in the universe.
这个频率是宇宙中任何射电天文学家都应该熟悉的。