They are mainly corrosion failure, environment fracture failure, distortion failure and fracture failure.

在众机理中，主要是：腐蚀失效、环境断裂失效、变形失效和断裂失效。

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Fracture of engineering site is one of the main disaster under the environment of the regional instability dynamics. At present, it still lacks systematical research.

工程场地破裂灾害是区域非稳定动力学环境下的灾害效应之一，但目前对其尚无针对性系统研究。

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Objective To explore the influence of topical biomechanical environment in the fracture point after which was fixed with auto control micro motion locking nail (AMLN) on the fracture healing mode.

目的探讨自控微动带锁髓内钉（AMLN）固定后骨折局部生物力学环境对骨折愈合的影响及机制。

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