...键字: 高静水压；矿物颗粒边界；等效应力；数值模拟[gap=1465]Key words: high hydrostatic pressure; mineral grain boundaries; equivalent stress; numerical modeling...
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这类岩石缺乏面理构造，是由于矿物颗粒的脆性碎裂，旋转以及颗粒边界的磨擦滑动和扩展而造成的。
These rocks are lack of foliation and resulted from the brittle fragmentation of mineral grains with rotation of grain fragments accompanied by fractional grain boundary sliding and dilatancy.
而矿物多晶中间频率段的导电机制由颗粒边界所引起。
In polycrystalline samples, the intermediate-frequency mechanism is interpreted as the grain-boundary conduction mechanism.
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