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煤矿用携带型电化学式氧气测定器技术条件
Technical condition of electro-chemical type oxygen instrumentation for coal mine
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煤矿用携带型电化学式一氧化碳测定器技术条件
Tcchnical condition of electro-chemical type carbon monoxide instrumentation for coal mine
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滚筒采煤机喷雾降尘用喷嘴基本尺寸
Spraying nozzle for shearer -- Outlet diameters and connecting threads
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煤矿用单级耐腐耐磨离心泵技术条件
Single-stage corrosion and wear-resisting centrifugal pump for coal mining-Technical condition
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矿用水位传感器通用技术条件
General spacifications for a water level transducer in mine
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立井提升容器楔形连接装置技术条件
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煤矿用移动式甲烷断电仪通用技术条件
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