appearance of mine ground pressure
appearance of mine ground pressure
矿山地压的外观
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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In this paper the reasons for the ground pressure appearance of 690 level in Tongkuangyu mine are analysed. It is hoped that gives reference for ground disaster protection.
本文对铜矿峪矿690中段地压显现的原因进行分析，希望给地压灾害预防提供参考。
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