但由于孔隙的存在，岩石内部的应力分布出现非对称性，导致劈裂裂纹偏离纵向对称轴；
The stress distribution of rock is asymmetric due to the presence of pores existing. The failure cracks deviate from vertical axis of symmetry.
但由于孔隙的存在，岩石内部的应力分布出现非对称性，导致劈裂裂纹偏离纵向对称轴；
The stress distribution of rock is asymmetric due to the presence of pores existing. The failure cracks deviate from vertical axis of symmetry.
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