In the light of the characteristics of Sichuan gas fields, a numerical simulation model of researching water invasion of individual well in fracture gas reservoir with bottom water is set up.
根据四川气田的特点，建立了一种裂缝性底水气藏单井水侵研究的数值模拟模型。
With the assumption that the sites of fracture nucleation are randomly distributed in the sample, we deduce out a set of enclosed equations for predicting the fragment number and size distribution.
同时，假设断裂成核点随机分布于样品中，依据统计原理导出了一组完备的方程组，由此从理论上给出了碎片的数目及其大小分布关系式。
The grain fracture of energetic particle bed as a result of dynamic impact and dynamic compression at different temperature was measured by using a high-low pressure launch set.
利用高低压发射装置，测定了含能颗粒床在不同环境温度下动态撞击与动态挤压的破碎程度；
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