hexavalent chromium短语⁷⁹⁹⁷⁸⁺⁹ 基本例句 六价铬 The experimental results show that SRB have strong capacity of reducing Hexavalent chromium and can be used widely. 实验表明，该菌的适用范围广，处理含铬废水的能力强。 magsci Hexavalent/span> chromium is in less speciation, ratio of hexavalent chromium to total chromium is less than3%. 六价铬对总铬比率低于3%，是最次要的形态； cnki