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煤矿六大系统的要求和六大系统的
主要内容是那些？
煤矿井下；安全避险；六大系统；安全监控；人员定位；通信联络；紧急避险；压风自救、供水施救、
-Coal mine six requirements of the system and the main content of the six systems are those? Coal mine security hedge six systems safety monitoring personnel positioning communications emergency hedge air pressure, self-rescue, water rescue,
主要内容是那些？
煤矿井下；安全避险；六大系统；安全监控；人员定位；通信联络；紧急避险；压风自救、供水施救、
-Coal mine six requirements of the system and the main content of the six systems are those? Coal mine security hedge six systems safety monitoring personnel positioning communications emergency hedge air pressure, self-rescue, water rescue,
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