hydrograph of spring discharge 泉水流量过程曲线
instability ratio of spring discharge 泉水不稳定系数
Human excessive deforestation, unscrupulous discharge sewage, a variety of industrial pollution, make even the head also don't go to the spring.
人类过度的砍伐，肆无忌惮的排放污水，五花八门的工业污染，使春天连头也不会地走了。
Fluid end consists mainly of module, suction and discharge valve assembly, suction and discharge spring, suction and discharge pipe, plunger, packing, safety valve and pressure regulator, etc.
液力端主要由液缸、吸入、排出阀总成、吸入、排出弹簧、吸入管、柱塞、盘根、安全阀、稳压器等部件组成。
Pump valve spring fracture is another common typical fault of emulsion pump with high pressure and large discharge which reduces the volumetric efficiency of emulsion pump greatly.
泵阀弹簧断裂是高压大流量乳化液泵的另一种常见典型故障，极大地影响了乳化液泵的容积效率。
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