More than half of respondents gave the Treasury secretary a grade equivalent to a D or F. 大约一半以上的经济学家给财政部长评级为D级或F级。
This article introduces how Dexing Copper Mine applies grade equivalent in the operations. 介绍了德兴铜矿应用当量品位的情况。
Concept of grade equivalent, major working methodology and factors impacting secondary orebody outlining by grade equivalent are described. 主要阐述了当量品位的概念、主要工作方法及影响当量品位法二次圈定矿体的各方面因素。
Practice shows that utilization of mineral resource can be greatly improved by using grade equivalent to make an overall evaluation on an orebody. 实践表明,应用当量品位的概念来综合评价矿体可以大大提高矿产资源的利用率。
Study on Wastewater Integrated Discharge Grade of Equivalent Numerical Method 等效数值模型用于污水综合排放级别划分研究