mineral preparation的用法和樣例：
例句
- The separation of pyrite and arsenopyrite is always one of the difficulty subjects in mineral processing.
硫砷分離一直是選礦界所面臨的難題之一。 - Flowsheet study of mineral processing technology for Deqin Yangla complicated copper sulphide ore is conducted in this paper.
對德欽羊拉嵌布複雜的硫化銅礦石進行選礦工藝流程試驗。
