“coal bed”的概念、定义、翻译、参考文献-科学参考

单词	coal bed
释义	coal bed [`kōl ´bed] ^GEOLOGY A seam or stratum of coal parallel to the rock stratification. Also known as coal rake; coal seam.
随便看	straightforward trunking straight joint straight-line coding straight-line mechanism straight-line motion straight piecework system straight polarity straight proportional system straight-run straight-run distillation straight-run gasoline straight-run pitch straight-run stock straight sinus straight strap clamp straight-tube boiler straight turning straight vertical antenna straightway pump straight wheel strain strain aging strain axis strain bursts strained-layer superlattice

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