資料來源 : pyDict

硬石膏,無水石膏

資料來源 : Webster's Revised Unabridged Dictionary (1913)

Anhydrite \An*hy"drite\, n. [See {Anhydrous}.] (Min.)
   A mineral of a white or a slightly bluish color, usually
   massive. It is anhydrous sulphate of lime, and differs from
   gypsum in not containing water (whence the name).