... turret type piston pump 阀箱式活塞泵(美) twin cylinder reciprocating pump 双缸往复泵 twin lobe pump 双凸轮旋转活塞泵 ...
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... duplex reciprocating compressor 双列往复压缩机 duplex reciprocating pump 双缸往复泵 duplex regulator 双效调节器 ...
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... 双缸泵 pump; duplex 双缸往复泵 pump; duplex reciprocating 电磁泵 pump; electromagnetic ...
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... 双缸往复泵； twin cylinder reciprocating pump 双缸往复泵； two cylinder reciprocating pump 双缸蒸汽直动泵； duplex steam pump ...
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