农用离心泵选型方法曲宝建，郑士军，盛桂文有些农民在购买离心泵时，由于选型不当，不是选用的水泵扬程偏高或流量偏大，造成使用中效率低，浪费动力，就是选用的水泵扬程偏低或流量偏小，允许吸上真空大不够，满足不了生产的需要，甚至不能工作，所以正确选型很重要。影... Agricultural centrifugal pump selection method Qu Baojian, Zheng Shijun, Sheng Guiwen Some farmers in the purchase of centrifugal pump, due to improper selection, not the choice of pump head high or flow is too large, resulting in the use of low efficiency, waste of power, is the choice Pump head low or flow is too small, allowing suction on the vacuum is not enough to meet the needs of production, or even can not work, so the correct selection is very important. shadow...