In order to study ultrafine coal surface wettability change, used the operating manual DCAT21 which made in Germany to determine the five ultrafine coal powder that were made from different metamorphism coal.
为了研究不同变质程度的煤经超细化处理后表面润湿性的变化,利用德国产的接触角自动测量仪(OperatingmanualDCAT21)对所制的5种不同变质程度的超细煤粉进行了接触角的测定。
Ten coals of different metamorphic degree have been investigated by the use of ~(13)C CP/MAS NMR technique,of which the spinlattice relaxation,variable contact time and dipolar dephasing experiments were performed on each coal.
用~(13)C CP/MAS 技术对我国十种不同变质程度的煤进行了研究,在这些煤样上完成了自旋晶格弛豫,变化接触时间和偶极去相实验。
Through analyzing the results of mercury injection experiments and static cryogenic nitrogen adsorption experiments,this paper discusses the control effect of coal metamorphic degree on the physical properties of coal reservoirs.
通过对大量煤岩样品的压汞实验和低温氮吸附实验测试结果的系统分析,讨论了煤变质程度对煤储层物性的控制作用。
There exist lots of factors influencing the differencial distribution of permeability,from such aspects as the development of fracture system,the effective stress of coal-bed reservoirs,coal-bed tectonic evolution and coal-bearing rock metamorphic degree,the relationship among them and spacial distribution of highly permeable areas and the research progress are illustrated.
煤储层渗透性是制约煤层气勘探选区的重要参数,影响渗透率差异分布的因素有很多,从裂隙系统的发育、煤储层有效应力、煤层构造演化、煤岩变质程度几个方面阐述了它们与高渗区空间分布的关系及其研究进展。
Degree of metamorphism steps up along the strike from south to north, whereas steps up along the dip in company with depth.
在走向上煤的变质程度由南向北逐渐增高,在倾向上煤层随赋存深度的增大变质程度逐渐增高。
Reaction Mechanisms and Characteristics of Methane Generation During Pyrolysis of Different Rank Coals;
不同变质程度煤热解甲烷生成特征及反应机制
Structural Characteristics of Low-middle Rank Coals and Generation Mechanisms of Methane and Hydrogen during Pyrolysis;
低中变质程度煤的结构特征及热解过程中甲烷、氢气的生成机理
thick-layer apt to oxidation type characterized by large thickness of coal seam and low metamorphic degree, and transition type.
以煤层厚度大和低变质程度为特征的厚层氧化类型; 过渡类型.
The CWS rheology of high rank coal depends mainly on the structure and property of the dispersants.
变质程度高且灰分较低煤浆的流变性,主要依赖于分散剂的结构与性质;
Geochemistry of REE in Different Ranks of Yunnan,Guizhou and Chongqing Coal;
云、贵、川地区不同变质程度煤中稀土元素含量研究
The blood plasma lipid examination was abnormal.
血浆脂质出现不同程度的异常变化。
The physical structure of a food also can affect the course and extent of spoilage.
食品的物理结构也能影响变质的过程和程度。
We do not know to what extent they altered the racial quality.
我们不知道在多大程度上他们改变了种族特质。
Study on Quality and Freshness of Royal Jelly in Storage Process;
蜂王浆贮藏过程中品质和鲜活度的变化研究
Study on Management of Schedule,Quality,and Safety in Power Substation Construction Project
变电站工程建设中进度、质量、安全管理研究
Changes of Physicochemical Properties and Maturity Evaluation of Cassava Residue Compost during Composting
木薯渣堆肥过程中理化性质变化和腐熟度评价
Variation Law of Gaseous Composition During Biomass Reburning Process
生物质再燃过程中气相成分浓度的变化规律
Study on changes of quality and acidity of pollen yoghourt in storage
花粉酸奶在贮藏过程中酸度和品质变化的研究
Changes of Superoxidation and Endomembrane Microviscosity of the Core of Ya pears during Browning Development
鸭梨果心褐变过程中膜质过氧化及细胞内膜微粘度的变化
A soft, brownish - black coal in which the alteration of vegetable matter has proceeded further than in peat but not as far as in bituminous coal.
褐煤一种褐色软质煤，植物性物质的变化程度比泥煤重但比烟煤轻
Correlativity of Carcass and Meat Quality Performance and Its Change with Body Weight of Luyan White Pigs
鲁烟白猪胴体性能肉质性状相关程度及其随体质量变化规律
becoming less in dimension or degree.
尺度或程度上变弱的。