A comparison of the advantage rate of the two time points (1996 and 2003) indicates the trend of change with regard to industrial structure and the distribution of disadvantages and advantage location of coal resource.
A comparison of the advantage rate of the two time points (1996 and 2003) indicates the trend of change with regard to industrial structure and the distribution of disadvantages and advantage location of coal resource.
研究结果表明，东北地区煤炭生产能力不断萎缩，产量优势逐渐下降、深加工程度不够，资源储备不足等。