chromium A hard grey metallic element that takes a high polish, occurring principally in chromite: used in steel alloys and electroplating to increase hardness and corrosion-resistance['krəumiəm]n
铬(Cr); 铬(【技】铬是脆性金属，不能单独作为金属材料使用，但与铁、镍、钴、钛等组成合金后，则成为具有耐蚀性、耐热性、耐磨性、热强性及特殊性能的工程材料。 • The stainless steels, which now often contain other elements besides chromium, are among the most corrosion-resistant alloys available and their use is increasing rapidly. 现在，不锈钢除含有铬外，常常还含有一些其他元素，这些不锈钢是目前抗蚀性能最好的合金，其使用范围正与日俱增。)
