The application of the cold-cold insulation glue ?a new functional material has solved the problems of corrosion on the external surface of LPG storage tank and temperature drop.
采用刷涂新型功能材料——凉凉隔热胶的方法，解决了液化汽罐存在的外表腐蚀及降温问题。
Micro cell corrosion originally carried out in pearlites on the external surface of the pipe where micro cell circuit could be formed, and gradually developed and spreaded.
认为，油管失效是由于微电池腐蚀造成的，腐蚀先在钢管外表面能构成电池回路的珠光体晶粒中进行，然后逐渐扩展到周围的晶粒。
The results showed that the hardness of oxide films increased from the surface to the substrate, because electrolyte corrosion between the internal and external surfaces was different.
结果表明：阳极氧化膜因内外表面受到电解液的腐蚀程度不同而表现为氧化膜的硬度自膜层表面到基体逐渐升高。
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