英德
有道
百度
谷歌
图片
维基
百科
长焰煤
kennel coal
- 在平面上，长焰煤在东部凹陷的6个赋煤区均有分布，褐煤分布于东部凹陷西南端和中北部，气煤则集中分布于该凹陷的中南部。
The results show that the long-flame coal distributs in the six coal-rich regions, the lignite distribute in southwest and north central region and gas coal distribute in south central of eastern depression on plane. - 摘要系统地阐述了义马矿区长焰煤的地质、煤炭储量、生产建设情况，煤质特征及其利用途径。为广大煤炭用户提供了有重要价值的技术资料和数据。
The text explains the terra, coal reserves, status of generative construction and utilizing approaches of jet coal in Yima diggings, which provides valuable technologic information and data for coal consumers. - 摘要运用煤田地质学基本理论和煤的镜质组反射率值及工业分析等有关数据，确定了辽河盆地东部凹陷古近系沙三段含煤亚段的煤种主要为褐煤、长焰煤和气煤；进而阐述了该煤段垂向上煤级与埋深的变化规律性、不同赋煤区各煤级垂向界限的差异性。
Under general geological study of exploratory development of coalbed gas and underground gasification of coal bed in eastern depression of Liaohe basin, authors apply the basic principle of coal geology and the data of vitrinite reflectance and technical analysis of coal to ascertain that coal classification are dominantely the lignite, long-flame coal and gas coal of coal-bearing upper section of third member of Shahejie Formation, And then dissertate the variational regularity between coal rank and buried depth in vertical and otherness of vertical limit of coal rank in different coal-rich regions.
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中国词汇量第二的英语词典
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