Shangqiu-Zhecheng coal fields 商柘煤田
Surface coal fields classifying 露天煤田分类
Huainan and Huaibei coal-fields 两淮煤田
Main coal fields 主要煤田
surface coal fields 露天煤田
The gravity gliding structures are widely spreaded in the coal fields in China.
重力滑动构造在我国煤田中广泛分布。
China's energy demands are starting to outstrip its efforts to develop of its vast domestic coal fields.
虽然中国坐拥庞大的煤炭资源，但煤矿的开发速度已开始跟不上能源需求增长的步伐。
Coal fire is a commonly existed disaster in the coal fields of northen China, it burns huge amount of coal resource, worsens environment.
煤层自燃是中国北方煤田中普遍存在的灾害现象，它不但烧掉了大量的煤炭资源，而且还污染了环境。
应用推荐