chromiumn.铬
chromium complex铬络合物
chromium acetate乙酸铬
chromium nitride氮化铬
chromium coating镀铬层
chromium nitrate硝酸铬
chromium removal除铬
chromium trioxid三氧化铬
chromium sulfate硫酸铬
chromium carbide碳化铬
chromium dioxide二氧化铬