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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. 研究人員借助放射性碳來(lái)研究某些生物過(guò)程。
- The material in this beach has been dated by radiocarbon. 這個(gè)海灘上的物質(zhì)經(jīng)過(guò)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(jìn)行光合作用。
- Basics of carbonate sequence stratigraphy are outlined. 概述碳酸巖層序地層學(xué)基礎。
- Professional papers of petroleum stratigraphy and palaeontology II. 石油地層古生物會(huì )議論文集2。
- Sedimentation Models and Quantitative Stratigraphy II. 沉積模型和定量地層學(xué)2。
- Stratigraphy studies the sequence of the rocks in the earth's crust. 地層學(xué)研究地殼中巖石的層序。
- 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(chǎn)于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(wàn)四千年。
- From the view of stratigraphy, they all belong to the Cretaceous period. 從地層學(xué)上看，它們都屬于白堊紀。
- 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(fā)育及有關(guān)的資源環(huán)境問(wèn)題。
- From the view of stratigraphy, they all belong to the Cretaceous period . 從地層學(xué)上看，它們都屬于白堊紀。
- Stratigraphy is one of the basic subjects of most significance in geology. 地層學(xué)是地質(zhì)學(xué)的一門(mén)重要的基礎學(xué)科。
- Bacteria and bacterial residue carry additional carbon and would skew the radiocarbon date toward the present. 細菌和細菌性殘余帶來(lái)額外的碳，會(huì )使現時(shí)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(xué)是按照地震資料解釋進(jìn)行地層學(xué)和沉積相的研究。
- Coal geology emphatically studies always stratigraphy and sedimentology of coal and coal-bearing strata. 煤地質(zhì)學(xué)一直偏重于對煤和含煤地層的地層學(xué)和沉積學(xué)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(fā)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(xué)家，因研制出放射性碳測年代技術(shù)而獲得1960年諾貝爾獎
