Displacement and deformation of deep pit supporting system concern not only security of the pit, but also the safety of the surrounding environment.

深基坑支护系统的位移与变形不仅关系到基坑本身的安全问题，也影响到周边环境的安全。

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According to the characteristics of work safety of a specific region, the author proposes a macro-framework for regional scientific and technological supporting system of work safety.

笔者针对特定区域安全生产的特点，提出了构建区域性安全科技支撑体系的宏观构架。

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It is important to study on-line safety analysing and risk evaluating of the electric power system, and we should build safety and banausic power marketing technic supporting system.

强调应加强在线电网安全分析和电力系统风险评估的研究，建设安全实用的电力市场技术支持系统。

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