In this paper, through analysis and summary of the characteristic of former energy supply system earthquake disaster, the disaster chain theory is proposed to study the earthquake disaster question.

通过对以往能源供应系统地震灾害特点的分析和总结，提出用灾害链理论来研究系统的地震灾害问题。

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The main characteristic of this stitch is the chain formation which indicates that it is formed by looping into itself.

这种针迹的主要特点是链状，这说明了这种针迹是自身打圈形成的。

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A new method of obtaining linkage characteristic polynomials based on the adjacency matrix of the kinetic chain is presented in the paper.

本文介绍了一种建立在运动链关联矩阵基础上求解运动链特性多项式的新方法。

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Another characteristic is that mercury becomes more concentrated as it moves up the food chain, reaching its highest levels in predator fish that may be consumed by humans, the report adds.

BBC: UN: Rising mercury emissions increase risk to humans

Another characteristic, it added, was that mercury became more concentrated as it moved up the food chain, reaching its highest levels in predator fish that could be consumed by humans.

BBC: Nations agree on legally binding mercury rules