mineral product

Research of Mineral Product Electric Locomotive Direct Torque Velocity Modulation System

矿用电机车直接转矩调速系统的研究

Apply of PBG-□/ 10 ( 6) Y Mineral Product Flame-proof Type High Vacuum Switch in Mine Pit Production

PBG-□/10（6）Y隔爆型高压真空开关在矿井生产中的应用

Using methods of cost-benefit comparision, marginal analysis, sinking cost analysis and opportunity cost, and combining the long-term average trend of mineral product price and production cost, a cut-off grade economical analysis model for the mine low-grade ore utilization is established.

综合地运用成本收益比较法、边际分析法、沉没成本分析法和机会成本法，结合矿产品价格和生产成本的长期平均趋势，建立了矿山低品位矿利用的临界品位的经济分析模型。

But the lack of energy sources, water, land and mineral product is more and more outstanding.

但是我省能源 、 水 、 土地、矿产等资源不足的矛盾越来越突出.

Analysis and Forecast About Mineral Product Price Based on Time Series Model

基于时间序列模型的矿产品价格分析与预测