| 1. | He is busy with proving up a coal deposit .
他正忙于勘探煤层。 |
| 2. | Coal seams intermixed with iron ore .
煤层和铁矿混杂在一起。 |
| 3. | The degree of carbonization of coal depends on the temperature .
煤层的炭化程度取决于温度。 |
| 4. | The thicker coal seams are located in a 10-15 km wide belt along which the channel meanders .
较厚的煤层位于河道发生弯曲的、宽10-15公里的地带内。 |
| 5. | In order to loosen the coal, the miners made holes in the dividing wall and filled them with explosives .
为了使煤层松动，矿工们在隔墙上打了炮眼，装进了炸药。 |
| 6. | Sub - level caving mining with seam of thickness dirt band
含厚夹矸煤层的综放开采 |
| 7. | Mining high gas coal seam with enclosed mining method
封闭式采煤法开采高瓦斯煤层 |
| 8. | Features of steep coal seam and its mining technology
急倾斜煤层的特点及采煤工艺 |
| 9. | Transfer rule of water - gas two phase flow in coal bed
气两相流在煤层中运移规律 |
| 10. | Way of exhausting gas from low permeability thin seam
低透气性薄煤层瓦斯抽放方法 |
