?杆式泵
杆式泵(insert pump), 此释义来源于网络辞典。
双壳泵
双壳泵联轴器
插入型固定式井下泵
Insert a foil pack of powdered insulin into a slot, prime the pump with a lever and push a trigger that releases the cloud of insulin into a clear plastic chamber.
FORBES: Magazine Article
杆式泵；[油气]插入泵
sucker rod pump
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