coal spontaneous combustion的意思|示意
煤自燃
coal spontaneous combustion相关短语
1、 period of coal spontaneous combustion 自然发火期
2、 the coal spontaneous combustion 煤自燃
3、 coal spontaneous combustion zone 煤自燃危险区域
4、 coal spontaneous combustion stage 煤自然发火期
5、 roof coal spontaneous combustion 顶煤自燃
6、 coal spontaneous combustion period 煤自然发火期
7、 Coal Spontaneous Combustion Extent 煤自燃程度