With the price growth of coal, it is necessary to recalculate the economic efficiency of oxygen-riched coal injection.

随着煤炭价格上涨，富氧多喷煤的经济效益要重新计算。

youdao

With the price growth of coal, it is necessary to recalculate the economic efficiency of oxygen-riched coal injection.

随着煤炭价格上涨，富氧多喷煤的经济效益要重新计算。

youdao