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；
Vertical three-screw pump internal simple and compact structure, high efficiency, strong self-priming capacity, energy saving effect is good;
文中指出可以自吸性能曲线的斜率K，作为对不同型式自吸泵及其自吸能力强弱的评定值。
It is shown that the slope K of the self-priming performance curve is the estimation criterion to describe the self-priming ability of different self-priming pumps.
对样机的实验测试表明，整体开启阀压电泵的自吸能力和输出流量都要好于悬臂梁阀压电泵。
The experimental results show that the self-suck ability and output flux of the piezoelectric pump with holistic opening valve are better than the piezoelectric pump with cantilever valve.
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