This paper discusses corrosion principle and current protection methods of concrete, introduces the important application of concrete structure in the bridge building?

论述了混凝土的腐蚀机理及通用的防护方法，介绍了钢筋混凝土结构在桥梁建设中的重要应用。

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How to make reasonable protection of bridge is the issue we need to explore.

如何对桥梁进行合理的防护是我们现在需要探讨的问题。

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This paper studies the influence of converter transformer D-bridge zero sequence circulating current on valve short circuit protection.

笔者研究了换流阀三角形侧零序环流对阀短路保护误动作的影响。

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Temporary barriers could be installed to protect Cowley Bridge, and there were also plans for defence walls to improve protection at Exeter St David's railway station, it said.

BBC: Exeter flood defence improvement works to start in 2014

Their mother's squawks competed with the din of morning-rush bridge traffic as Chris Nadareski, a wildlife biologist with the New York City Department of Environmental Protection, gently lifted the fluffy chicks out of their nesting box and used pliers to fasten metal bands around their legs.

WSJ: 4 falcon chicks living on NY-NJ bridge are banded