本文阐述了利用复合涂层与外加电流电化学保护相结合的方法，对已运行的旧的、腐蚀较严重的输水管道进行防护。
This paper describes the united anticorrosion methods of coatings and impressed current electrochemical protection, which offers protection to old, badly corrosion water-carried pipeline.
析氢反应在电化学能量转换、电化学工业、金属腐蚀和防护以及金属的电沉积等方面都具有重要的意义。
Hydrogen evolution reaction is significant to apply to electrochemical energy conversion, electrochemical industry, metallic corrosion and protection and metal electrodeposition.
因此钛的腐蚀与防护问题倍受关注，是目前材料学和电化学研究中的重要课题之一。
Therefore titanium Corrosion and Protection of the problem has attracted extra attention, and electrochemical materials are an important research subject.
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