1.
of coal, as contrasted with coal obtained from a strip mine.
关于煤，与从露天矿中开采的煤相对的。
2.
Nos.9 and 16 Coal Seams Anthracographic Features and Sulfur in Coal
黔北煤田花秋勘探区9、16号煤煤相特征与煤中硫
3.
Coal Facies Features and Comparative Study of Southern China Late Permian Bark Coal
华南晚二叠世树皮煤的煤相特征及对比研究
4.
Comparison Research between the Jurassic Coal Facies and the Hydrocarbon-Generating Potential in Turpan-Hami Basin
吐哈盆地侏罗系煤相与生烃潜力研究
5.
Ceshui Formation Lithofacies Paleogeography and Coal Accumulation in Northern Section of Lianyuan-Shaoyang Coalfield, Central Hunan
涟邵煤田北段测水煤系岩相古地理与聚煤作用
6.
The correlation of ash and gross calorific value of Penghu clean coal
坪湖煤矿精煤灰分与高位发热量相关关系
7.
Research on Relationship of Mining Height and Recovery of Top-coal in Full-mechanized Caving Mining
综放开采割煤高度与顶煤回收率相互关系研究
8.
Research on Coal and Rock Separation and Petrographic Analysis Experimentation of Coal Samples from KAILUAN Group Mining Corporation
开滦煤煤岩分离及岩相分析的试验研究
9.
Maceral Effect on Slurryability of CWS
煤的岩相组成对煤的成浆性的影响——灵武煤改性制备高浓度水煤浆研究之一
10.
Studies on Interactions Between CWS Dispersants and Coals Ⅷ Effect of Sodium Lignosulphonate on the Slurryability of Coal and CWS Rheological Behavior
水煤浆分散剂与煤之间的相互作用Ⅷ木质素磺酸钠对煤的成浆性与水煤浆流变特性的影响
11.
Coal-accumulating environments and characteristics of inland coal measures: a case study of Jurassic coal-bearing area in Qilian Mountains and north Caidamu basin in Qinghai
陆相煤系聚煤环境及聚煤特征——以青海祁连山和柴北缘含煤区侏罗系为例
12.
Instead, he struck a match and lighted the gas.
相反，他划了根火柴，点亮了煤气灯。
13.
Analysis of manufactured gas composition by gas chromatography
GB/T10410.1-1989人工煤气组分气相色谱分析法
14.
A large percentage of the coal is exported.
相当大部分的煤出口国外。
15.
Determination of true relative density of coa
GB/T217-1996煤的真相对密度测定方法
16.
Determination of apparent relative density of coal
GB/T6949-1998煤的视相对密度测定方法
17.
The lower temperature corresponds to the plastic temperature of a certain coal.
较低的温度相当于某些煤的塑性温度。
18.
Study on the Relation of the Regional Earthquake and Coal and Gas Outburst;
区域地震和煤与瓦斯突出相关性研究