sexivalence六: a surname价: a male servant六价物;六价的: hexad六价的: hexabasic; hexabromo; hexad; hexatomic; sexvalent六价铬: cr vi; hexavalent chrome; hexavalent chromium; lead cadmium sexivalent chromium; pbb; sexavalent chrome下载手机词典可随时随地查词查翻译