low-grade mineral 低品位矿
low-grade mineral resources 低品位矿产资源
low grade mineral resources 低品位矿产资源
low-grade zinc mineral 低品位锌矿
low-grade barium mineral 低品位钡矿
low-grade copper mineral 低品位铜矿
Recently, in situ leaching and heap leaching are the most advanced technology for mining low grade mineral resources in the world.
地浸与堆浸是当今世界上采冶开发低品位矿产资源最先进的技术。
Se is a kind of scarce and scatter element, and it is very low-grade ore in mineral.
硒是一种稀少而又分散的元素，矿石中其品位一般都很低。
The paper introduces the research of mineral processing test of some low-grade copper oxide ore in Yunnan.
本文主要针对云南某地低品位氧化铜矿样进行了选矿试验研究。
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