ore formation 矿层 ; 矿石制作
uranium ore formation 铀成矿作用
concentration in ore-formation 富集成矿
rock-ore formation time interval 岩时差
regularity of ore formation 成矿规律
uranium ore formation condition 铀成矿远景
reasons for ore formation 矿床成因
There are close relationships between porphyry and ore-formation of molybdenum.
钼成矿与岩体及岩体顶部的裂隙网脉有关。
Previous studies show that there are close relations between organic matter and ore formation.
已有研究均表明，矿床形成同有机质有着密切联系。
It is thought that the original crust, especially the metamorphose basement of Precambrian is the base of gold-ore formation.
初始地壳，尤其是前寒武纪的变质基底是金矿密集区形成的物质基础。
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