noun🔗Share硼砂,天然硼酸钠钙。 A white mineral with triclinic crystals, NaCaB5O9·8H2O."The science student identified the white, fibrous mineral as ulexite based on its crystal structure and chemical formula in the textbook. "这位理科生根据教科书上晶体结构和化学式,鉴定出那种白色纤维状的矿物是硼砂,也就是天然硼酸钠钙。mineralgeologymaterialsubstancechemistryChat with AIVocabulary GamePractice Reading