coal substance 中文意思是什麼

coal substance 解釋
煤有機質
  • coal : n 1 煤，煤塊，煤堆。2 〈pl 〉〈美國〉（一堆）燒紅的煤。3 〈常 pl 〉〈英國〉（幾塊）供燃燒的煤。4 ...
  • substance : n 1 物質，材料；【哲學】實體，本體，本質 （opp appearance）。2 實質，內容；（故事等的）要旨，要領...
  1. First of all, the substance foundation of low - rank coal cbm generation in the basin has been discussed according to the development of coal reservoir, coal petrography, coal properties, coal rank, coal genera, coal facies feature of lower jurassic badaowan formation ( jlb ) and middle jurassic xishanyao formation ( j2x )

    首先，根據下侏羅統八道灣組（ j _ 1b ）和中侏羅統西山窯組（ j _ 2x ）煤儲層發育、煤巖、煤質、煤級、煤類、煤相地質特徵論述了本區低煤級煤層氣生成的物質基礎。
  2. The type of harmful substance in coal, the toxicity of harmful substance, the migrating ability of harmful substance and the current environment protection standard of china, are the main content which should be taken into account when establishing cleaning potential assessment system of coal resources in china

    煤中有害物質種類、有害物質毒性、有害物質遷移能力以及我國現行的環境保護標準等指標，是建立我國煤炭資源潔凈潛勢評價體系時應當考慮的主要內容。
  3. Substance sources of rare - earth elements in late permian coal seams on coal mines in bijie

    畢節煤礦區晚二疊世煤層稀土元素的物質來源
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