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松软煤层瓦斯抽采钻孔失稳机理及控制技术研究,2015.06~2016.8;
Release time:2022-04-07
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粘结式隔尘帘降尘技术的研究与试验,2013.10~2014.12;
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宽城县金属非金属矿山安全监管信息平台项目,2016.6~2017.6;
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