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 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。
While under the same test conditions, samples without coating have undergone severe damages on both the surface and the fracture section.
而在同等条件下未涂层试样不论是表面还是断口处都已遭受了较为严重的破坏。
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