“roof of coal seam”的概念、定义、翻译、参考文献-科学参考

单词	roof of coal seam
释义	roof of coal seam Encyclopedia 理学煤炭地质勘查释 roof of coal seam煤层顶板在正常顺序的含煤岩系剖面中，直接覆于煤层上面的岩石。
随便看	electrokinetic remediation electrokinetics electrokinetics remediation electrokymograph electro-laryngograph electrolarynx electroless plating electro luminescence electro-luminescence electroluminescence electroluminescence, EL electroluminescence emission spectra electro luminescence measurement electroluminescence spectrum electroluminescene spectrum electroluminescent display electroluminescent display device electroluminescent material electroluminescent materials electroluminescent polymer electrolysate electrolyse electrolysed water electrolyser electrolysis

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