Explosion prevention and protection in underground mines - Protective systems - Part 2: passive water trough barriers.
地下煤矿的防爆和保护。保护系统。第2部分：钝态水槽屏障物。
Explosion prevention and protection in underground mines - Protective systems - Part 4: automatic extinguishing systems for road headers.
地下矿井中的防爆和保护。保护系统。第4部分：掘进机用自动灭火系统。
Explosion prevention and protection in underground mines - Protective systems - Part 4: automatic extinguishing systems for road headers.
地下矿井中的防爆和保护。保护系统。第4部分：掘进机用自动灭火系统。
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