To increase component of grinding force ratio can increase principal stress extreme values in grinding stress field. Materials can be removed by brittle fracture.
粗加工中，增加磨削分力比可以增大磨削应力场中的主应力极值，有助于材料的脆性去除。
There exist a complex brittle fracture system and a tectonic stress field within 2000 m of the main hole.
在主孔2000米之内，存在复杂的脆性破裂系统和构造应力场。
The geodynamic setting of the ductile shear may be the later Magma Intrusion and the brittle fracture is related to the NS-trending stress field in this area.
韧性剪切作用的动力学背景可能是受后期岩浆侵入的影响，最后的脆性破裂应与区域上存在南北向的压应力有关。
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