corrosion

Protective coatings are applied to steel structures to prevent corrosion in marine and industrial environments.保护性涂层被涂在钢结构上，以防止海洋和工业环境中的腐蚀。

The corrosion of underground pipelines is a serious and costly problem for utilities in many countries.地下管道的腐蚀是许多国家公用事业面临的一个严重且代价高昂的问题。