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固体充填材料自重投料系统技术要求
Technical requirments of solid backfilling materials free falling feeding system
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矿用非谐振式输送机
Mining non-resonance vibrating conveyor
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液压支架用乳化油、浓缩液及其高含水液压液
Emulsifying oil，concentrate fluid and high-water content hydraulic fluid used for powered support
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液压支架立柱、千斤顶密封件 第2部分:沟槽型式、尺寸和公差
Sealing components for legs and rams used in powered support--Part 2:Groove types,dimensions and tolerances
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液压支架立柱、千斤顶密封件 第1部分:分类
Sealing components for legs and rams used in powered support--Part 1:Types and sorts
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煤田钻探金刚石取心钻头
Diamond core bit for coal drilling
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多分量、多采集站瞬变电磁场探测仪
The multi-components and multi-survey stations transient electromagnetic field detectors
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采场钻孔水文远程监测设备
The equipments system of the borehole hydrologic in mining district
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煤矿坑道钻探用往复式泥浆泵
To-and-fro mud pump used in coal mine tunnel drilling
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