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   丹麦语
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短语
kontraventil 名词
一般 check valve
机械工程 automatic non-return valve; clack valve; non-return valve; check mechanism; disk of a swing check valve; swing-type check mechanism; valve clack of a check valve; valve flap of a check valve
kontraventil: 10 短语, 3 学科
地球科学5
机械工程4
运输1