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Oil / petroleum
containing
往复泵
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动力
往复泵
power reciprocating pump
双作用活塞式
往复泵
double-action reciprocating pump
双缸
往复泵
duplex reciprocating pump
双缸双作用
往复泵
duplex double-acting reciprocating pump
往复式井下泵
borehole reciprocating pump
蒸汽
往复泵
donkey pump
蒸汽
往复泵
steam reciprocating pump
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