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- The carbon isotopic age by 14C of Krish cultural layer of this settlement is about 6650+50 y. BP or 5600-1480 y. 这些地区Krish文化层的~(14)C同位素年代为6650+/-50年,或者公元前5600-1480年。
- The research also shows that there is not any change in the stable carbon isotopic composition in all these river systems caused by the quake. 本研究同时显示921地震并未对这些河川之稳定碳同位素组成造成影响。
- Carbon isotopic composition of modern soil and paleosol as a response to vegetation change on the Chinese Loess Plateau. 黄土高原现代土壤和古土壤有机碳同位素对植被的响应","Liu, WG;Ning, YF;An, ZS;Wu, ZH;
- Dai Jinxing,Li Jian,Luo Xia,et al.Alkane carbon isotopic composition and gas source in giant gas fields of Ordos Basin[J].Acta Petrolei Sinica,2005,26(1):18-26. [20]戴金星;李剑;罗霞;等.;鄂尔多斯盆地大气田的烷烃气碳同位素组成特征及其气源对比[J]
- Sulphur can influence the carbon isotopes of gaseous hydrocarbon. 单质硫还会影响气态烃碳同位素组成。
- Some scholars consider that “isotopic reversals”can result from the mixture of two kinds of biogenic natural gas with “normal distribution” in carbon isotope. 对于前者而言，作为混合的两个端元天然气，它们必须具有不同的成因或来源，或它们是明显不同的演化阶段的产物。
- oxygen and carbon isotopic composition 碳、氧同位素
- oxygen and carbon isotopic compositions of shells 壳体O、C稳定同位素组成
- These neutrons react with nitrogen nuclei, giving out a proton and producing the active carbon isotope 14. 这些中子跟氮元素的核子产生反应，释放出一个质子并产生出活性碳同位素14。
- stable carbon isotopic signature of CH4 甲烷碳同位素比值
- carbon isotopic composition of individual n-alkanes 单体碳同位素
- carbon isotopic equilibrium method 碳同位素平衡法
- These neutrons react with nitrogen nuclei,giving out a proton and producing the active carbon isotope 14. 这些中子跟氮元素的核子产生反应，释放出一个质子并产生出活性碳同位素14。
- The cracking gas from oil is very different from the cracking gas from kerogen in components and carbon isotopes. 原油二次裂解生成的天然气与干酪根初次裂解生成的天然气在组分特征和碳同位素特征上存在明显的差异。
- Carbon isotope techniques can be used to study the allocation and turnover of recently photosynthesized C. 植物近期光合C分结构性C和代谢C；
- Its methane carbon isotope is heavier than -40‰ , ethane carbon isotope is heavier than -28‰ . 其甲烷碳同位素值均大于-40‰,乙烷碳同位素值大于-28‰。
- TSR is also a reason for the partial reversal trend of carbon isotopes in some regions. 同时，在局部地区硫酸盐热还原（TSR）也可引起碳同位素组成的局部倒转。
- A more promising technique for early detection focuses on changes in carbon isotopes in carbon dioxide. 有一种较被看好的预先侦测技术，是以二氧化碳中碳同位素的变化做为分析重点。
- Diet composition hada large effect on stable carbon isotope composition of cattle tissues. 饲料对牛组织中碳同位素组成的影响远大于牛品种对它们的影响；
- In terms of the carbon isotope values,it is believed that inorga nic CO 2 exists in well Su5 in Suligemiao and well Lin1, Lin5 in Jingbian. 靖边林 1、林 5井为无机CO2 气 ,陕参 1井为有机CO2 气。
