The impact fracture section of modified unsaturated polyester showed ductile failure.
所得改性不饱和聚酯的冲击断裂截面表现为韧性断裂；
The retardation of tensile overload will reduce the 321SS crack growth speed for the furcation on the fracture section.
拉伸超载能阻滞321不锈钢的疲劳裂纹扩展速率，样品断面有明显的周期性的裂纹偏折或分叉；
The fracture section microstructure and inclusion of 82B wire rod were tested, and the drawing brittle fracture was examined using SEM.
对82B钢盘条拉拔脆断断口进行了金相组织和夹杂物检测，并借助扫描电镜观察分析了拉拔过程中产生的脆性断口形貌。
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