“两步骤回采”的概念、定义、翻译、参考文献-科学参考

单词	两步骤回采
释义	两步骤回采 Encyclopedia 工学回采工艺释 two step mining两步骤回采在回采过程中，将采区或矿块划分为矿房和矿柱，第一步骤回采矿房，第二步骤回采矿柱的回采方式。
随便看	tunnel maintenance tunnel mode tunnel number tunnel plane design Tunnel Project tunnel seismic computational theory tunnel seismic prediction tunnel shield machine tunnel spillway tunnel structural section tunnel transistor tunnel-type air supply system tunnel ventilation tunnel vertical section design Tunnel Warfare tunoscope Tun Tian Du Wei tuntian field officer tuntian of Eight Banners tuntian of prisoners Tunuunik crater Tunxi Qu Tuoba Gui Tuoba Liwei Tuoba Shiyijian， the Sovereign in tribal stages of Northern Wei Dynasty

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