Calcium sulfate dihydrate硫酸钙 二水合物二水硫酸钙, ACS二水硫酸钙Calcium sulfate dihydrate, ACSsulfuric acid, calcium salt (1:1), dihydratesulfuric acid, calcium(2+) salt, dihydratecalcium(II) sulfate, dihydrate (1:1:2)CaSO4.2H2Ocalcium sulfate dihydratecalcium sulfate dihydrate