The catastrophepoint of the AE rate of concrete material given in this paper is importal for the fracture study.
文中给出的混凝土材料声发射率这一参数的突变点,对混凝土材料的断裂力学研究有重要意义。
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According to damage mechanical analysis, the soil body damage level increases with increasing of water content of soil and a catastrophepoint of damage variable exists.
Species interdependence in nature confers many benefits on the species involved, but it can also become a point of weakness when one species involved in the relationship is affected by a catastrophe.