海拉尔盆地具有多煤阶煤分布。
The coals with different coal ranks occurrence in Hailaer basin.
本文介绍了世界低煤阶煤炭资源及其分类。
The resources of low rank coal in the world have introduced in this paper.
低煤阶煤层气富集成藏具有自身独特的特点。
Enrichment and accumulation of coalbed methane in low rank coal have their own unique characteristics.
随着煤阶的降低，得到的无灰煤中轻组分含量增加；
With the coal rank reduced, the light component content of the ash-free ash obtained would be increased.
内因是煤的渗透性、水分、变质前煤阶、围岩的封闭性。
There are two factors to influence the hydrothermal metamorphism of coal.
本文用多元回归方法，分析煤岩相组分和煤阶对煤及相对应煤焦表面形态的影响。
Linear regression method was used to analyse the effects of maceral and rank on morphology of coal and corresponding char.
文章根据相关文献中的吸附资料和实测数据，系统探讨了平衡水分下煤的吸附能力与煤阶的关系。
According to relevant literatures and measured data, the relation between coal rank and coal adsorption capacity at equilibrium water content is systematically discussed in the paper.
研究认为高矿化度有利于高煤阶煤层气富集成藏，低矿化度是低煤阶煤层气的富集成藏的有利条件。
It is proved that the high salinity is the advantageous factor for the high rank CBM reservoir enrichment and formation, whi...
为了研究水文地质条件对低煤阶煤层气成藏的控制作用，对美国粉河盆地和我国准噶尔盆地进行了对比研究。
This paper deals with favorable and unfavorable factors of uranium mineralization in the Lianghe basin based on hydrogeological, palaeohydrogeological and hydrogeochemical characteristics.
世界范围内低阶煤层气勘探开发已获得了巨大的成功，中国拥有丰富的低煤阶煤层气资源，具有广阔的勘探前景。
Exploration and development of CBM from low-rank coals have been very successful in the world, and its exploration potential in China is very large because China is very rich in such resource.
重点研究了无烟煤煤阶和粘结剂对型焦反应性的影响，为便于分析，同时对粘结剂和原料无烟煤的反应性进行了研究。
In this study, the effect of anthracite rank and binders on the reactivity of anthracite formed cokes were major objects.
中国山西河东地区中阶煤储层的含气量比较低、含气饱和度低，而储层渗透性好，储层能量比较大；
The reservoirs of the medium rank coal characterize low gas content, low gas saturation, good permeability, and high energy in Hedong area of Shanxi, China.
中国山西河东地区中阶煤储层的含气量比较低、含气饱和度低，而储层渗透性好，储层能量比较大；
The reservoirs of the medium rank coal characterize low gas content, low gas saturation, good permeability, and high energy in Hedong area of Shanxi, China.
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