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- All living things contain radiocarbon. 所有生物都含有放射性碳。
- Researchers use radiocarbon to study certain biological processes. 研究人員藉助放射性碳來研究某些生物過程。
- The material in this beach has been dated by radiocarbon. 這個海灘上的物質經過放射性碳測定。
- The leaf was allowed to photosynthesize in the presence of radiocarbon. 葉子被允許同放射性碳進行光合作用。
- Basics of carbonate sequence stratigraphy are outlined. 概述碳酸岩層序地層學基礎。
- Professional papers of petroleum stratigraphy and palaeontology II. 石油地層古生物會議論文集2。
- Sedimentation Models and Quantitative Stratigraphy II. 沉積模型和定量地層學2。
- Stratigraphy studies the sequence of the rocks in the earth's crust. 地層學研究地殼中岩石的層序。
- Radiocarbon dating in 1988 showed the cloth was made between 1260 and 1390. 放射性碳年代測定法顯示,那塊布料產於1260年與1390年之間。
- Radiocarbon dating showed some of them to be more than 14,000 years old. 根據碳同位素測定,這些化石距今已有一萬四千年。
- From the view of stratigraphy, they all belong to the Cretaceous period. 從地層學上看,它們都屬於白堊紀。
- Their main effort is directed to stratigraphy and structure of outcrops. 他們的主要精力放在研究天然露頭的地層情況與構造上。
- Late Quaternary stratigraphy and evolution of the Changjiang Delta, China. 晚第四紀古河口灣的發育及有關的資源環境問題。
- From the view of stratigraphy, they all belong to the Cretaceous period . 從地層學上看,它們都屬於白堊紀。
- Stratigraphy is one of the basic subjects of most significance in geology. 地層學是地質學的一門重要的基礎學科。
- Bacteria and bacterial residue carry additional carbon and would skew the radiocarbon date toward the present. 細菌和細菌性殘餘帶來額外的碳,會使現時測定的年代變得不準確。
- Seismic stratigraphy is the study of stratigraphy and depositional facies as interpreted from seismic data. 地震地層學是按照地震資料解釋進行地層學和沉積相的研究。
- Coal geology emphatically studies always stratigraphy and sedimentology of coal and coal-bearing strata. 煤地質學一直偏重於對煤和含煤地層的地層學和沉積學的研究。
- The researchers used radiocarbon dating on 22 pieces of microscopic charcoal found among Neandertal tools in fire pits in Gorham Cave. 研究者們使用放射性碳方法為在山洞中發現的22片木炭確定年代.
- American chemist.He won a1960Nobel Prize for developing the method of radiocarbon dating. 利比,威拉德·弗蘭克1908-1980美國化學家,因研製出放射性碳測年代技術而獲得1960年諾貝爾獎