A analysis on counting coal price according to the ash content and calorific value can provide the most reasonable settlement.
灰分、热值计价方式对比分析，为矿山经营者提供更趋合理的结算方式。
A analysis on counting coal price according to the ash content and calorific value can provide the most reasonable settlement.
灰分、热值计价方式对比分析，为矿山经营者提供更趋合理的结算方式。
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