adj.[化]六價的
It proved that hexavalent chromium content in disposed effluent meets national standard for effluent discharge. 實踐證明,經(jīng)處理的廢水中六價鉻含量達國家排放標準。
Hexavalent chromium is used to plate metals and to make paints, dyes, plastics and inks. 六價鉻常作為金屬板用于制造涂料、燃料、塑料和墨水。
