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Дамжуулах хоолойн зэврэлтээс хамгаалах бүрхүүлийн …
Corrosion is the main cause of material failure. Metal corrosion is a major economic problem. According to relevant statistics, China's annual loss caused by metal corrosion accounts for about 5% of the GNP, pipeline corrosion accounts for a large proportion. With the sustained and rapid development of China's economy, the demand …
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