英语词汇“push-button tone pair”的翻译、意思、用法、释义-英汉汉英双解词典

词汇	push-button tone pair
释义	push-button tone pair 按钮双音
随便看	letdown flowrate let down gas letdown heat exchanger let down heat exchanger let-down heat exchanger letdown line letdown line isolation valve let down one's guard let down one's hair letdown orifice let down passengers letdown pipe letdown ratio let down reflex let-down reflex let-down reftex letdown residual oil tank letdowns let-downs letdown solvent let down someone letdown stream let down stream let-down stream let-down system