Corrosion protection mechanism of rare earth passivation was stated.

阐述了稀土钝化膜的防蚀机理。

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The corrosion protection mechanism of the composite coating was analyzed.

初步探讨了复合膜的耐蚀机制。

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Historical relic protection is a science which deals with the reasons and mechanism of damage and corrosion of historical and cultural relics and thus provides protective techniques and measures.

文物保护技术是研究各类文物损坏、腐蚀的原由和机理，探索保护各种文物的技术方法的一门学科。

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