边际火用成本 marginal exergy cost
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运用结构理论详细分析一个复杂的能量系统，计算结果得到组元产品的火用成本。
A complex energy system with structural theory is to be discussed in detail, and the exergy cost of its unit product is calculated.
火用评价结果表明，该系统稳定性好，运行成本低，年平均火用效率高，值得推广。
The result of exergy analysis shows that the TSHS runs at a steady course with low cost and high mean annual efficiency, which is worth promoting.
对天然气供热模式的热效率火、用效率及成本进行了分析。
The heat efficiency, exergy efficiency and cost of the natural gas...
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