A type of fluid pump in which reciprocating pistons or plungers displace the fluid.
流体泵的一种类型。它的往复运动的活塞或柱塞驱替流体。
According to the requirement of the technology, a new type of reciprocating pump with cam-drive mechanism resulting in the constant flow was designed.
针对注聚合物驱油的工艺要求，研制了新型凸轮机构恒流量往复泵。
The processes in developing a kind of reciprocating air compressor used as automobile type pump are introduced.
介绍了一种汽车轮胎充气泵的研制过程。
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