这三个新的强度准则不仅适用于拉压强度不等的材料，并且适用于那些单轴压缩强度不等于双轴压缩强度的岩土类材料。

These criteria not only apply to the materials of unequal tensile strength, but also to the rock material that uniaxial compressive strength is not equal to biaxial compressive strength.

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基于不等幅值循环荷载作用下低温三轴振动试验资料，研究了冻结粉质粘土在分级往返加荷情况下的残余应变产生条件。

By means of the experimental data from dynamic triaxial stress-strain test of variable cyclic amplitude for frozen soil, the formative conditions of residual strain on frozen silt clay are studied.

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研究并基本解决了轴线相交且做允许的任意空间运动时等速万向节和十字轴式不等速万向节的运动传递特性的分析问题。

Presented is an analysis of the motion transmitting characteristics of constant velocity joint (CVJ) and Cardan joint when the axes of the joints move arbitrarily in the constraint permitted space.

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