The dilation and softening characteristics of natural expansive soil while shearing under low net mean stress and suction are mainly caused by the evolution of damage structure.
原状膨胀土在吸力和净围压较低时的剪胀和软化特性主要是由于结构损伤的演化引起。
When land use patterns changed, changes in soil quality were embodied in content of organic matter, soil water holding and supplying capacity, soil structure and soil microbial characteristics.
在土地利用方式变化过程中，土壤质量变化体现在有机质含量、土壤供持水能力、土壤结构状况和土壤微生物特性的变化上。
The pore is one of important mark of soil structure and its characteristics have substantial influence on engineering geological properties of soil.
孔隙是土结构的重要标志之一，其特征对土的工程地质性质有很大影响。
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