常見例句雙語例句Thin layers of sandy shale, and carbonaceous fragments are locally present.局部出現(xiàn)砂質(zhì)頁巖薄層和碳質(zhì)碎屑。Gold mineralization of the zone is confined only to the Cambrian carbonaceous shale overlain by siliceous rocks, and apparently controlled by a premineral tough shear zone.該“潛伏”脈帶的金礦化限于寒武系以硅質(zhì)巖為頂板的碳質(zhì)頁巖中，明顯受成礦前產(chǎn)生的韌性剪切帶控制。In the paper, there is an introduction of the technology of calcinating portland clinker in the mechanical shaft kiln using carbonaceous shale partly in place of clay batch .介紹了用碳質(zhì)頁巖替代部分黏土配料，在機(jī)立窯上煅燒硅酸鹽水泥熟料的技術(shù)。 返回 carbonaceous shale