有用物质可否成为矿床，取决于某元素含量与最低工业品位的比值。
The ration of the element's content and the lowest industrial grade can be used to determine whether the deposit be formed by useful materials or not.
附带建议在矿产工业指标中取消最低工业品位和矿床平均品位以与上述两个新标准接轨。
It is recommended that minimum industrial grade and average grade of ore deposit in commercial factors can be canceled in order to suit for these two new standards.
应用推荐