关键词 : 煤层自燃 ; 聚氨酯 ; 改性 [gap=685]Key words: spontaneous combustion of coal seam; polyurethane; modification
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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。
参考来源 - 煤自燃特性参数研究及应用·2,447,543篇论文数据，部分数据来源于NoteExpress
The spontaneous combustion of coal seam endangers the safe production.
井下煤层自燃严重危害着安全生产。
Spontaneous combustion of coal seam poses great hazards to safety mining operations.
煤层自燃发火是煤矿安全的大敌。
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。
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