英语词汇“筆石”的翻译、意思、用法、释义-英汉汉英双解词典-爱贷网

词汇	筆石
释义	筆石 bǐ shí古代的一種體內有骨骼的無脊椎動物，形體很小，生活在平靜的海洋中，構成羽毛狀或鋸齒狀的羣體。頁巖中常有它的化石，是劃分和對比地層的重要化石之一。
随便看	coal seam gas resource coal-seam gas well coal seam genetic type coal seam geological conditions Coal seam goal coal seam groundwater coal seam group coal seam hosting coal seam infusion coal seam injecting Coal seam injection coal seam interpretation coal seam liable to dust explosion coal seam methane content coal seam mining coal seam modeling Coal seam of big inclination coal seam of face coal seam outcrop coal seam permeability coal seam pitch coal seam productive capacity coal seam profile coal seam prone to spontaneous combustion coal seam reservoir characteristics