coal mine safe production 煤矿安全生产
The spontaneous combustion of coal seam is one of the major problems in safe production of coal mine.
煤层自燃问题一直困扰着我国煤矿的安全生产。
The safe monitoring system on the coal face is the nerve of safe production in coal mine.
综采工作面的安全监测系统是煤矿生产的神经系统。
The spontaneous combustion of coal seam is one of the major calamities in safe production of coal mine.
煤层自燃问题是影响煤炭生产安全的最主要灾害之一。
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