Train derailment is an important factor to influence train-running safety.

火车脱轨是影响火车运行安全的一个重要因素。

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Only when China becomes a strong country of ocean, can the influence of sea power upon petroleum safety completely be an active influence factor.

只有当中国成长为一个强大海权国家，海权对石油安全的影响才会完全变为一种积极的影响因素。

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This paper analyzes the problems of safety and keep off light in veranda fence, and brings upped the influence factor considering and solution method to design veranda fence.

本文针对栏板的高度安全性、档光问题进行了分析，提出了设计阳台栏板所考虑的影响因素及解决方法。

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