英语词汇“double non-return valve”的翻译、意思、用法、释义-英汉汉英词典

单词	double non-return valve
释义	double non-return valve双向止回阀double non-return valve{=double check valve}雙向止回閥海洋科學名詞—造船工程double non-return valve雙向止回閥海事
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