内关闭式活塞泵; inside-packed type pistonpump 内混淆型自吸泵; self-priming pump with inner recirculation 内弥缝式活塞泵; internal-packed type piston pump ..
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... 内封闭式活塞泵 inside-packed type pistonpump 内混合型自吸泵 self-priming pump with inner recirculation 内密封式活塞泵 internal-packed type piston pump ...
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