• 本文将倾长壁仰开采岩层视为弹性

    The paper regards the main roof strata in uphill and downhill mining of an inclined longwall as a elastic plate.

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  • 结合340 0 6炮采工作面地质情况开采工艺,对工作面液压单体原因进行了受力分析介绍防止液压单体柱倒柱技术取得效益

    Combining with the geological case, oblique mining process at blasting face 34006 analyze the accepted force reason of collapsed pillar and introduce the preventing technique and achieved benefit.

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  • 这件事过后不久天周日下午当时他们乘着中的游艇夏日海面上扬帆远航,在后甲板的天篷底下懒地享受

    One Sunday afternoon some time after this they were sailing the summer seas in their dream yacht, and reclining in lazy luxury under the awning of the after-deck.

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  • 这件事过后不久天周日下午当时他们乘着中的游艇夏日海面上扬帆远航,在后甲板的天篷底下懒地享受

    One Sunday afternoon some time after this they were sailing the summer seas in their dream yacht, and reclining in lazy luxury under the awning of the after-deck.

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