The result indicates that the surface light crackle and inclusion air hole est. metallurgy shortcomings are the main reason of causing crackle.
结果表明，原材料存在浅表面微裂纹、夹杂气孔等冶金缺陷是导致裂纹产生的主要原因。
The result indicates that the surface light crackle and inclusion air hole est. metallurgy shortcomings are the main reason of causing crackle.
结果表明，原材料存在浅表面微裂纹、夹杂气孔等冶金缺陷是导致裂纹产生的主要原因。
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