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orpiment n.【礦物】雄黃,三硫化二砷。

orpin

Aims : providing services to enhancing the quality of the young rural entrepreneurs as well as boosting the member enterprise economic returns , improving the prosperity of the chinese rural economy and the devil orpiment of the society 協會宗旨是:為提高鄉鎮企業青年廠長(經理)的素質服務,為提高會員企事業經濟效益服務,為促進中國農村經濟繁榮和社會發展服務。

Using flotation method to recover orpiment from flotation tailings of realgar and its mechanism 從雄黃浮選尾礦中浮選回收雌黃及機理