chromium ion铬离子
chromiumn.铬
chromium-nickel gear steel铬-镍齿轮钢
chromium plated steel shield铬板钢罩
chromium sub-group element铬分族元素
chromium-methionine chelate蛋氨酸螯合铬
chromium /creatinine ratio(尿中)铬肌酸酐比率
chromium - free passivation无铬钝化处理
chromium and chromate residue铬酸铬渣
chromium sub-group compound铬子群化合物