major fracture meaning in English

主裂缝

Dolomite also occurs in this mode as replacement of limestone along major fractures and belts of enclosed breccia .
沿包围角砾岩的主要裂隙带，以交代石灰岩的方式，也能形成白云石。
It was demonstrated that the values of domain strain decreased while the rate in reduction of the domain strain lowered with larger n . combined the xrd with sem results , the non - fracture mechanism of the sample when pure electric fatigue was applied can be described as : at an earlier stage of electric fatigue , the high repeated incompatible strain led the major fracture mode for the fatigued sample to be of inter - granular . the ability of domain switching in a - - > c of the sample along with the direction of an applied electric field kept dropping , hence , reduced the domain strain
结合xrd和sem观测，提出了纯电疲劳作用下试样不会发生断裂的机理：电疲劳初始阶段，试样中的非协调高应变导致沿晶微裂纹，随着微裂纹的增加，使得试样沿外电场方向发生a c畴的能力不断降低，从而导致畴变应变减小，当应变减小到一定程度时，将不足以在试样中引起新的微裂纹或使原有微裂纹继续伸长。