direction of extraction是什么意思,direction of extraction的中文翻译,direction of extraction的用法例句-行业英语-优校网

网络释义

1)direction of extraction,开采方向2)reverse direction mining,反向开采3)taking up,向上开采4)unidirectional working,单向开采5)working from bottom up,上向开采6)working to the dip,下向开采

用法例句

Researches have been conducted in regard to the Stubble Repeating relationship at the Fifth and Sixth Seam at the Ping Dingshan Fifth and Sixth Coal Mine and the coal Pressure appear rule during the face mining,and the reverse direction mining method has been set down.

研究了五六矿戊己组煤层的压茬关系及工作面开采矿压显现规律,制定了反向开采实施方案。

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direction of extraction是什么意思

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