The gasification face development rate of the testcoal changes gently in underground gasification process, which indicates that the underground gasification of lean coal has high stability.
气化工作面扩展速率在供风点附近出现最大值，变化平稳，瘦煤地下气化具有较高的稳定性。
2
This article concludes the test result of the internal puddler about injecting the bituminous and anthracite mixed coal.
本文归纳了国内炼铁工作者关于高炉喷吹烟无混合煤的试验结果。
3
The acid test of the Copenhagen climate change summit was always going to be coal.