zone of secondary enrichment
常见例句
- There is a secondary enrichment zone of glauberite in the western part of China to have developed a number of usable glauberite deposits.
中国西部地区钙芒硝矿床发育次生富集带，形成可供工业利用的次生芒硝矿床。 - The mode of occurrence of the gold in the oxidation zone, mineralization features and the secondary enrichment mechanism of the gold are systematically dealt with in this paper.
本文对氧化带中金的赋存状态及其矿化特点进行了研究，并探讨了金的次生富集机理。 返回 zone of secondary enrichment