m type backward wave tubem: M, m (pl. M's, m's) 1. ...型: mould; model返波: backward wave振荡管: oscillating tube; oscillatin ...m型返波振荡管: m type backward wave tube下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:m 型返波振荡管，即可在微信中查询翻译
