中英▼

  • The concept of green technique in coal mining was proposed. Its connotation and technical system were explained.

    提出了煤矿绿色开采的概念，阐述了它的内涵和技术体系。

    youdao

  • The concept of green technique in coal mining was proposed. Its connotation and technical system were explained.

    提出了煤矿绿色开采的概念，阐述了它的内涵和技术体系。

    youdao

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