在初始损伤的压密阶段，砂岩的密度损伤增量为正值，速率也为正；
In the stage of compaction by initial damage, density damage increment of sandstone is positive and the rate ia positive.
进一步讨论表明，岩石密度损伤增量场能圆满地刻画岩石细观损伤状态和岩石细观损伤过程。
It is tested that the density damage increment not only reflects the damage degree of rock but also describes the meso-damage process of rock. The further discussion shows...
密度损伤增量分析可以获得密度损伤增量图像和岩石试件内部任意应力状态、任意部位的密度损伤值。
The values of density damage at any stress state and position are gained by analysis of density damage increment.
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