电子管放gasfilled relay tubee: 充气继电器管eustachian tube etube or auditory tubee: 听管amplificative valve: 放大气阀amplificationbagsofenowplenitudinous: 充足的amplifiction: 放大率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:amplificationof tubee，即可在微信中查询翻译
