The defects include cracks, color center, inclusions, step - faceting, low - angle boundaries and dislocation pile - up group.

这些缺陷包括:包裹物,色心, 开裂, 台阶面,位错, 小角晶界和位错塞积群.

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This verifies the existence of dislocation pile - up and its stimulation to the nucleation of microcracks.

证实了位错塞积的存在及其对微裂纹形核的促进作用.

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