主应力差 meaning in Chinese

deviator stress

This kind of structures will cause the principal stress difference bigger due to the sharp changes modulus of deformation between auxiliary core and main core , auxiliary core and upstream and downstream transition materials , which is disadvantage of stress transmission
该种心墙的结构型式，由于副墙与主墙、副墙与上下游侧过渡料的变形模量发生突变，不利于应力的传递，造成主应力差值偏大。
It puts forward that the open degree of coal reservoir increases with the enhancement of major stress difference by means of the linkage of maxim major stress difference and coal bed physical quality . when major stress difference is larger than loompa , permeability of coal reservoir is larger than 1 . 0md
通过最大主应力差与煤层物性的耦合，认为煤储层裂隙的张开度随主应力差的增强而加大，主应力差100mpa时，煤储层渗透率1 . 0md 。