a non-return valve retaining valve的意思|示意
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一种止回阀固定阀
a non-return valve retaining valve的网络常见释义
逆止阀 干蒸湿蒸蒸汽房专业词汇术语翻译 ... 事变阀门 lock valve; 逆止阀；止回阀 a check valve; a non-return valve，retaining valve;back valve 回阀 back valve;back pressure valve ...