英语词汇“double-return valve”的翻译、意思、用法、释义-英汉汉英双解词典

词汇	double-return valve
释义	double-return valve ˈdʌbəlrɪˈtɚnvælv双回流阀
随便看	question a suspect question a suspicious person question at issue questionatively question a verdict question awareness question bank Question bank control Question Bank Management question bank model Questionbase question based teaching question before a meeting question-begging question-beggings question behavior question blank question blank or questionnaire question box question card question catalog question categorization question-centered question chain question circumstances