利用扫描电子显微镜观察分析了聚碳酸酯、尼龙6、低密度聚乙烯的微观断裂行为，并对其断裂起因、断裂过程及断裂形态进行了讨论。
The fracture morphology of PC, PA6, LDPE is analyzed by using scanning electron microscopy (SEM), and the fracture cause, fracture process and fracture morphology are discussed respectively.
碳纤维的微观结构是影响其强度和断裂行为的重要因素。
The microstructure of carbon fiber is an important factor to influence it's strength and fracture behaviour.
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