好忠告人 发表于 2025-3-26 22:45:28
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https://doi.org/10.1007/978-1-61779-222-9eological structural discontinuities can dramatically increase mining costs by halting production locally for months at a time. High resolution seismic surveys can be used to reduce costs by identifying areas of coal with a low intensity of structural disturbance..Since all coal presently accessible玉米棒子 发表于 2025-3-27 08:47:32
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Book 1979 it is carried out, since it represents the field where the results of these technical developments are ultimately tested. In the commercial world it is from the geophysical interpreter that management learns the results of a large sector of exploration expenditure, and learns them in a form on whicintrigue 发表于 2025-3-28 08:11:23
http://reply.papertrans.cn/28/2702/270199/270199_39.pngAMOR 发表于 2025-3-28 11:34:50
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