a white or colorless mineral (BaSO4); the main source of barium
例句
用作名词 (n.)
A new type of sulphoaluminate clinker containing barium was burnt from low-grade raw material of barytes, and its burning process was studied. 采用低品位的重晶石为原料,烧制新型含钡硫铝酸盐水泥熟料,并对该水泥熟料的烧成制度进行了研究。