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1.1.裂纹和裂纹体裂纹是固体材料中不连续的一个区域,以其一部分界面特别尖锐为特征。图1在相同的放大比例下,比较了裂纹和机械缺口前沿尖锐的程度。
1.1. Cracks and Cracks Cracks are discontinuous areas of a solid material that are characterized by a particularly sharp part of their interface. Figure 1 compares the sharpness of the crack and the mechanical notch front at the same magnification.