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

单词	floor of coal seam
释义	floor of coal seam Encyclopedia 理学煤炭地质勘查释 floor of coal seam煤层底板在正常顺序的含煤岩系剖面中，直接伏于煤层下面的岩石。
随便看	freshwater shellfish viral diseases freshwater species fresh water storage works freshwater unionids Fresnel fresnel Fresnel approximation Fresnel, Augustin-Jean Fresnel bimirror Fresnel biprism Fresnel diffraction Fresnel diffraction by a circular aperture Fresnel diffraction by a circular obstacle Fresnel diffraction by a straight edge Fresnel double mirror experiment Fresnel double prism experiment Fresnel elastic surface Fresnel equations Fresnel formula Fresnel half period zone Fresnel hologram fresnel hologram Fresnel integral Fresnel Kirchhoff diffraction formula Fresnel-Kirchhoff diffraction formula

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