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.
用三元郃劑對清水塘鉛鋅鑛進行銅鉛分離浮選,其試騐指標比以前用重鉻酸鉀的試騐指標高,葯劑用量低,避免鉻的汙染,改善生産環 返回 Qingshuitang