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石炭系物质
1、instructional material───教材
2、carboniferous era───石炭纪
3、material───n.材料；用具；（有指明特征的）人才；素材；曲目；布料；adj.物质的；身体需要的；和推理内容有关的；重要的；（证据或事实）决定性的；客观存在的；物欲的；n.(Material)（意、美）妈特力娅丽（人名）
4、carboniferous spiders───石炭纪蜘蛛
5、carboniferous period───石炭纪
6、carboniferous forest───石炭纪森林
7、carboniferous food───石炭纪食物
8、carboniferous pdf───石炭纪pdf
9、carboniferous───adj.石炭纪的，石炭系的；n.石炭纪，石炭层
1、Permian -carboniferous hydrocarbon source rocks in Nanhuabei basin are widely distributed and have various types, which have offered the good material base for the oil and gas generation.───盆地石炭-二叠系烃源岩分布广泛、类型多样，为油气生成提供了良好的物质基础。
2、The Carboniferous-Lower Permian source rocks are high to very high in maturity, with a wide distribution, great thickness, high content of organic material and better variety.───石炭系—下二叠统烃源岩广泛分布，厚度大、有机质含量丰富，处于高成熟—过成熟阶段，为现实烃源岩。
3、material source of the Carboniferous karst type bauxite in North China mainly came from the underlying Late cambrian-middle Ordovician carbonate rock.───华北石炭纪岩溶型铝土矿的主要物质来源为下伏的晚寒武世—中奥陶世碳酸盐岩。