When water saturated degree is above critical value, the mechanical features of sandstone with large porosity are changed clearly.
在油水转化过程中，也存在一临界饱和度，超过此临界饱和度，其力学特性发生较大的改变。
When water saturated degree is above critical value, the mechanical features of sandstone with large porosity are changed clearly.
在油水转化过程中，也存在一临界饱和度，超过此临界饱和度，其力学特性发生较大的改变。
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