论文简介： Gypsum [calcium sulfate dihydrate (CaSO4·2H2O)] occurs in nature as an off-white, light-gray, or light-pink crystalline mineral. Decorative pieces, which can be used as semiprecious stone, are called alabaster.
Gypsum [calcium sulfate dihydrate (CaSO4·2H2O)] occurs in nature as an off-white, light-gray, or light-pink crystalline mineral. Decorative pieces, which can be used as semiprecious stone, are called alabaster.
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