1) Previtrain
初级镜煤
2) vitrain
['vitrein]
镜煤
1.
An investigation into the composition and structure of the photo-oxidation products from Shenfu vitrain;
神府镜煤光氧化产物的组成和结构研究
2.
Asa result,the clarain's potential of preducing hydrocarbon is superior to the vitrain's,and the groundwater level,the degrees of reduction and gelification in the Peat swamp in which the clarain deposited are respectively higherthan those of the vitrain swamp.
采用煤岩学和有机地球化学相结合的方法对比分析了镜煤和亮煤的生烃潜力，并根据分子化石探讨了它们的形成环境。
3) vitrinite A
镜煤A
4) primary
[英]['praɪməri] [美]['praɪ'mɛrɪ]
初级
1.
Modeling and Simulation of Vertical System Drived by Sectional Primary Permanent Magnet Linear Synchronous Motors
利用有限元法求得单段式永磁直线同步电机初级电磁参数。
5) coal rank
煤级
1.
Characters of coal classification and coal rank distribution in third member of Shahejie Formation in eastern depression of Liaohe basin;
辽河盆地东部凹陷沙三段煤种和煤级分布特征
2.
The comprehensive research showed that coalbed methane accumulation is mainly controlled by coal seam thickness,coal petrological composition,coal rank,adsorbability and good preservation conditions.
综合研究表明:该区煤层气富集的控制因素主要为煤层厚度、煤岩组分、煤级、吸附性能和良好的保存条件。
6) rank
[英][ræŋk] [美][ræŋk]
煤级
1.
The comprehensive research is made on equilibrium moisture, isothermal adsorption feature, proximate analysis and coal petrology for approximate 140 coal samples with different rank and from different places.
通过对近几年来采自不同地区， 各种煤级１４０ 个煤样的平衡水分、等温吸附特性、煤岩组成和煤质的综合研究， 揭示了煤在平衡水分条件下等温吸附特性的变化规律， 探讨了其影响因素。
补充资料：镜煤
镜煤
vitrain
」」n目团el镜煤(v itrain)光亮、均一、常具有内生裂隙的宏观煤岩成分。在成煤过程中，镜煤是由成煤植物的木质、纤维组织经过凝胶化作用形成的。镜煤呈黑色，光泽强，结构均匀，性脆，有贝壳状断口。镜煤的内生裂隙特别发育，裂隙面呈眼球状，裂隙间有时充填方解石和黄铁矿等薄膜。在显微镜下观察，镜煤是由显微煤岩类型中的微镜煤和以镜质组为主的微亮煤组成的。随着煤化度加深，镜煤的颜色由深变浅，光泽变强，内生裂隙增多。在中等变质阶段，镜煤具有强的粘结性和膨胀性。在煤层中镜煤呈透镜状或条带状，厚度一般不超过20~，垂直于层理的裂隙。有时呈线理状夹杂在亮煤或暗煤中，但有明显的分界线。 (戴中蜀)
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条