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