提出了经济实用的自救器接力紧急避险方法：入井人员佩戴压缩氧自救器；
The paper provided an economic and practical self-rescuer relay emergency refuge method. The personnel into the mine shall wear the compressed oxygen self-rescuer.
提出了经济实用的自救器接力紧急避险方法：入井人员佩戴压缩氧自救器；
The paper provided an economic and practical self-rescuer relay emergency refuge method. The personnel into the mine shall wear the compressed oxygen self-rescuer.
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