Application of many materials in historic stone conservation has some effect for protecting, but having some problems.
目前应用于石质文物保护的材料有很多种，对文物的保护起到了一定的效果，但是也存在许多问题。
Application of many materials in historic stone conservation has some effect for protecting, but having some problems.
目前应用于石质文物保护的材料有很多种，对文物的保护起到了一定的效果，但是也存在许多问题。
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