self-priming three screw pump
自吸驱替，吸入驱替 imbibition displacement 自吸三螺杆泵 self-priming three screw pump 自吸涡流不赌式泵 self-priming non-block turbulence pump ..
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self-priming three screw pump
自吸式三螺杆泵
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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Vertical three-screw pump internal simple and compact structure, high efficiency, strong self-priming capacity, energy saving effect is good;
立式三螺杆泵内部结构简单紧凑，效率高、具有很强的自吸能力、节能效果好；
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