预处理步骤改进污物的软化程度，和因此促进它的脱除。
The pre-treatment step improves the degree of softening of the soil, and thus facilitates its removal.
分析结果表明，由于岩土类材料的应变软化性质，结构呈现渐进破坏，且承载特性与材料的软化程度有关。
Analysis shows that strain softening of the material causes progressive failure and affects the load carrying capacity of the structures.
分析了剪胀和软化程度对球孔扩张时的应力、位移、塑性区半径及极限扩张压力等方面的影响，并将大、小应变理论的结果进行了比较。
The influence of softening extent on stress, displacement and the radius of plastic zone during expansion as well as the extreme expansion pressure are studied.
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