1) grade of coal
煤品级
2) coal rank
煤的品级
3) high-rank coals
高品级煤<能>
4) coal rank
煤的品级(能)
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：标准煤(见煤当量)
标准煤(见煤当量)
standard coal
、~‘~1人、4《1工兀飞coal)见煤当等
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