...综合能耗 操作费用 生产成本 技术比选 [gap=1181]Keywords] ethylene technology；investment；comprehensive energy consumption；operating cost；production cost；comparison and selection of technology ..
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Senior indexes include comprehensive energy consumption index and renewable energy index.
综合能耗指标、可再生能源利用指标。
With the progress of process technology, the comprehensive energy consumption dropped about 37.4%.
随着工艺技术的进步，综合能耗下降了37.4%。
The comprehensive energy consumption would be reduced considerably if the further optimization could be carried out to the unit.
如果对装置进一步优化，可大幅度降低综合能耗。
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