... duplex compound steam pump双缸串联蒸汽直动泵; duplex power pump双缸曲柄泵; duplex steam pump双缸蒸汽直动泵; ...
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... 双缸串联蒸汽直动泵； duplex compound steam pump 双缸曲轴弯曲部分泵； duplex power pump 双缸往复泵； twin cylinder reciprocating pump ...
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duplex power pump coupling 双缸曲柄泵联轴器
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