栾川钼矿复杂地层钻进跟管钻具研制 Development of Casing Drilling Bit in Complicated Stratum of Molybdenum Minerals in Luanchuan

Author: 刘军  

Publisher: 汉斯出版社

ISSN: 2329-731X

Source: Mine Engineering, Vol.01, Iss.01, 2013-04, pp. : 1-4

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Abstract