The status of the stresses and strains, and the varieties of the plastic area are simulated in the whole rock mass.
模拟了煤层开挖前后整个岩体中的应力、应变状况及塑性区变化规律；
Afterward, global large-scale massive volcanic activity in Permian Period generally brought about metamorphism whole middle Cambrian Period volcanic sediment rock in research area.
二叠纪全球性大规模火山活动，致使区内整个中寒武纪的火山沉积岩普遍发生变质。
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