-
The largest risk in coal mining is the collapse of the mine.
出现的最大危险就是巷道崩坍。
youdao
-
The quantitative evaluation method of the coal mine fire risk is discussed.
探讨了煤矿火灾危险的定量评价。
youdao
-
The quantitative evaluation method of the coal mine fire risk is discussed.
探讨了煤矿火灾危险的定量评价。
youdao