晶峰, 李, 河南省正龙煤业有限公司城郊煤矿, 中国
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卷 3, 编号 3 (2021) - 论文
地质超前探钻孔封孔工艺优化探讨
摘要
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ⓒ2019 by Academic Publishing Pte Ltd
Address：73 Upper Paya Lebar Road #07-02B-01 Centro Bianco Singapore 534818
phone：+65 83184869
ⓒ2019 by Academic Publishing Pte Ltd