井下的环境监测和人员定位是矿井安全管理中最为重要的环节。

In security management in mine, underground environment monitor and person localization are the most important.

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井下涌水是危及矿井安全的重要因素。

Water pouring is an important factor endangering mine.

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煤矿井下低压供电系统及装备。通用安全技术要求。

General requirements of safety and technical for underground coal mine. loW voltage power sup...

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煤矿井下低压供电系统及装备。通用安全技术要求。

General requirements of safety and technical for underground coal mine. loW voltage power sup...

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