Qingshuitang
常见例句
- Copper and lead in Qingshuitang lead zinc ore were separated by floatation separation with ternary agent, its experiment index is higher than that with potassium dichromate.
用三元合剂对清水塘铅锌矿进行铜铅分离浮选,其试验指标比以前用重铬酸钾的试验指标高,药剂用量低,避免铬的污染,改善生产环 返回 Qingshuitang