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顺槽用破碎机
Crusher for gate road
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煤矿采掘工作面用隔爆型潜污水电泵 技术条件
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煤矿井下用电器设备通用技术条件
General technical condition for electrical apparatus used underground mine
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液压支架(柱)用乳化油．浓缩物及其高含水液压液
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煤矿用阻燃钢丝绳芯输送带技术条件
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矿用刮板输送机型式与参数
Patterns and parameters for mining chain conveyors
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电子数显式收敛计
Electronic digital display convergence device
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矿用液压螺母及其高强度紧固件
Hydraulic nuts and high-strength fasteners for coal mining machinery
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