radium chloride英 [ˈreɪdiəm ˈklɔːraɪd]美 [ˈreɪdiəm ˈklɔːraɪd]网络 氯化镭化学双语例句Removing radium by barium chloride precipitation instead of pyrolusite adsorption七四三矿水冶厂二期尾矿坝废水处理工程改造&氯化钡沉淀法取代软锰矿吸附法除镭