And though federal law says the water has to be treated with chemicals to prevent that corrosion, it wasn't, according to the class action lawsuit.

尽管联邦法律规定必须用化学物质处理水以防止腐蚀，但根据集体诉讼，事实并非如此。

As well as being used to increase strength, graphene can be mixed into liquid coatings which are then applied to structures for a specific purpose, like preventing corrosion.

除了用于增加强度外，石墨烯还可以混合成液体涂层， 然后将其应用于结构以达到特定目的， 例如防止腐蚀。