At the very beginning of this dissertation, the condition of supply and demand of coal in China is stated, following the inconsistent features.

  • 本文首先阐述了煤炭市场供给和需求的特征,相关影响因素,以及煤炭供需矛盾的特征。

  • 互联网 2023-05-23 18:44:46

    • 相关例句