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。
2
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。
3
This paper studies the influence of converter transformer D-bridge zero sequence circulating current on valve short circuit protection.