The article analyzes how the hanging arch is caused during non-pillar sublevel caving in Jingtieshan mine, in order to provide a reference for rational mining organization and resources utilization.
本文着重分析了镜铁山矿无底柱崩落法悬顶问题，为合理安排矿山生产，合理利用矿产资源，提供了参考依据。
It seemed to take Sirius an age to fall: his body curved in a graceful arc as he sank backward through the ragged veil hanging from the arch.
小天狼星摔倒好像用了很长时间：当他向后摔倒，通过了拱门上粗糙的帘子时，他的身体蜷成了一个优美的拱形。
Enter the boiler room and pick up the CROWBAR hanging on the left arch pillar.
进入锅炉房，拿起铁撬左侧拱支柱悬挂。
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