... 可调式轴流泵 axial flow pump with adjustable(or variable)pitch blades 可逆叶片轴流泵 axial flow pump with reversible blades 沥青泵 bitumen pump ...
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... 缸体旋转式径向活塞泵； rotary-block radial pump 可逆叶片轴流泵； propeller pump with reversible blades , 惯性无曲柄泵； inertia crankiesspump ...
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可逆叶片轴流泵联轴器 axial flow pump coupling with reversible blades
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