因此，对煤矿资源的开采技术进行技术经济分析具有重要的理论价值和现实意义。
So it has an important theoretic value and practical rule to study the cost-effectiveness analysis of the coal.
揭示了开采工艺技术经济指标间的关联规律，对矿山开采效益的提高具有参考价值。
The correlation between techno-economical indexes is revealed, which is used as a reference to enhance of mine benefit.
油、气、水多相流的在线计量在油田开采，尤其是边际油田和海上油田具有特别重要的经济价值。
On-line measurement of multiphase flow of the oil, gas and water mixture is significantly valuable to the exploitation of oil fields, especially located on the sea or far from the city.
油、气、水多相流的在线计量在油田开采，尤其是边际油田和海上油田具有特别重要的经济价值。
On-line measurement of multiphase flow of the oil, gas and water mixture is significantly valuable to the exploitation of oil fields, especially located on the sea or far from the city.
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