One such crystal is the ruby, which contains trivalent chromium ions dispersed in a matrix of alumina . 这样的晶体有一种叫“红宝石”,它包含的三价铬离子弥散在氧化铝的基体中。
One relatively recent technique which has found some favor involves the inclusion of soluble trivalent antimony derivatives in the slurry during mixing . 一种比较近代的、人们好采用的技术是在混合过程中加入可溶性的三价锑衍生物。
Passivation of galvanized steel by trivalent chrome 镀锌层三价铬钝化工艺的研究
Oxidation of benzoin by ferric compounds 三价铁化合物对安息香的氧化
Practice for use of a ceric - cerous sulfate dosimetry system 硫酸高铈-三价铈剂量测定系统使用规程