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Bull Pump

双头泵

1、蒸汽单作用泵

...蒸汽的：vaporous蒸汽单作用泵：bull pump蒸汽带形成：steam zone formation ...

2、双头泵

...双头卡规 double-end snap gauge双头泵 bull pump双头蜗杆 double-thread worm ...

bull deep well pump杆式深井泵

bull deep-well pump杆式深井泵;油库泵

能源科学技术

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