mineral processing造句

1、Mineral processing of a copper oxide ore in Sinkiang
新疆某铜矿氧化矿石选矿的研究

2、Mineral processing and extraction technologies.
矿物加工和提取技术。

3、Molybdenum oxide is the product by mining, mineral processing and roasting etc.
工业氧化钼是经过采矿、选矿、焙烧等一系列工序之后的产品。

4、The mineral processing of Tangdan refractory copper oxide ores is a worldwide difficult problem.
汤丹难选氧化铜矿的选矿是一个世界难题。