The method of developing coalfield drilling columnar diagram procedure with VB6.0 is introduced.
介绍了用VB 6 0开发煤田钻孔柱状图程序的方法。
The application result of diamond drilling techniques in Huanglong Coalfield is analyzed emphatically in the paper.
分析了黄陇煤田大佛寺井田金刚石单管和双管取心及绳索取心钻井技术应用效果；
The application result of diamond drilling techniques in Huanglong Coalfield is analyzed emphatically in the paper.
分析了黄陇煤田大佛寺井田金刚石单管和双管取心及绳索取心钻井技术应用效果；
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