radiocarbon

noun

1. 放射性碳（碳的放射性同位素，用以测定物体的年代）
   a radioactive form of carbon that is present in the materials of which living things are formed, used in carbon dating
   1. radiocarbon analysis
      放射性碳分析

1. N-UNCOUNT 放射性碳
   Radiocarbon is a type of carbon which is radioactive, and which therefore breaks up slowly at a regular rate. Its presence in an object can be measured in order to find out how old the object is.
   1. The most frequently used method is radiocarbon dating.
      最常用的方法是放射性碳定年法。

1. The most frequently used method is radiocarbon dating.
   最常用的方法是放射性碳定年法。
2. All living things contain radiocarbon.
   所有生物都含有放射性碳。
3. Bacteria and bacterial residue carry additional carbon and would skew the radiocarbon date toward the present.
   细菌和细菌性残余带来额外的碳，会使现时测定的年代变得不准确。
4. The leaf was allowed to photosynthesize in the presence of radiocarbon.
   叶子被允许同放射性碳进行光合作用。
5. Researchers use radiocarbon to study certain biological processes.
   研究人员借助放射性碳来研究某些生物过程。
6. We ran a radiocarbon dating test.
   我们做了一个放射性炭时间实验。
7. Who says there are no pyramids in Bosnia? Radiocarbon dating method confirmed that the Bosnian Pyramid of the Moon was built about ten thousand years ago!
   谁说波斯尼亚没有金字塔？放射性碳年期测试法证实，波斯尼亚的月亮金字塔被建于一万年前！
8. Radiocarbon dating confirmed: Bosnia's Moon Pyramid was built about ten thousand years ago!
   放射性碳年期测试证实：波斯尼亚的月亮金字塔被建于一万年前！
9. Radiocarbon 14 dating method
   放射性碳14测定年龄法ph.1.【美】放射性测定年代
10. Radiocarbon dating places the site at ca.
    放射性碳测年地方网站在CA。
11. Measurement of geologic time, as through isotopic radioactive decay. radiocarbon 14 dating method
    地质年代测定通过放射性同位素衰变来测定地质年代放射性碳14测定年龄法
12. And its use in radiocarbon dating.
    它使用于放射性碳年代测定法。
13. A strange manuscript found inside and the unusually age-worn chest coupled with its noticeably unique design prompted them to conduct a radiocarbon test of the timber with which the chest was made.
    结果发现里面有一份手稿，而箱子实在很古老，用来制作箱子的木材也十分奇异，于是决定用放射性碳来测算它的年代。
14. Three procedures were given to this technique, and we can find the influential factors to conversion coefficient of radiocarbon.
    通过对14C样品制作三个步骤的分析，找出了影响14C样品碳转化率的因素；
15. Using dilution technique in radiocarbon dating is for the stability of background gas, and maximum age limit required by dilution technique depends on the content of carbon in a sample.
    稀释技术~（14）C测年的关键在于本底气的稳定，稀释技术测定的最大年限取决于样品的含碳量。
16. Advances in radiocarbon dating researches in the loess-paleosol sequences
    黄土-古土壤序列~（14）C年代学研究进展
17. Discussion on radiocarbon ages of shells in coastal and shelf deposits and its geological interpretation
    我国海岸及大陆架沉积物中贝壳的C~（14）年龄及地质解释的讨论
18. A new proxy of tropical ocean environmental study: radiocarbon record of hermatypic coral
    热带海洋环境研究的新代用指标&造礁珊瑚~（14）C记录
19. A study of supernova explosion with radiocarbon
    通过放射性碳研究超新星爆发事件
20. Analysis and determination on the age of geological samples by Li method in radiocarbon dating
    在~（14）C断代中用锂法对地质样品的分析
21. Oceanic carbon models often use radiocarbon to test the performance of the physical model for the large scale processes in the oceans.
    海洋碳循环模式中常使用放射性同位素14C来检验该模式的物理模型是否较好地反映了海洋中的大尺度变化的过程。
22. A carved antler of Late Palaeolithic collected from Xinglong County, Hebei Province, was measured by accelerator mass spectrometry ( AMS) radiocarbon dating.
    本文用加速器质谱（AMS）~（14）C测定了河北兴隆发现的一件珍贵的旧石器时代晚期工艺品&纹饰鹿角，以及山西朔县峙峪。
23. Small sample liquid scintillation counting technique for radiocarbon dating
    ~（14）C测年系列方法中的小样品~（14）C液体闪烁计数测年法
24. The application naturally occurred radiocarbon (~ ( 14) c) in marine organic geochemistry studies
    天然放射性碳同位素在海洋有机地球化学中的应用
25. Analysis of experimental errors in liquid scintillation counting in radiocarbon dating
    液体闪烁计数法应用于~（14）C年代测定的实验误差分析
26. Low Background Radiocarbon Dating Data Automatic Acquisition and processing
    低本底~（14）C年龄测定的自动数据获取和处理
27. As a bridge to join the age gap between the radiocarbon and potassium-argon, thermoluminescence ( TL) dating is widely used in archaeology, geology and project surveying.
    热释光法作为14C法和K-Ar法测年范围间断的连接，在考古、地质及工程勘察中得到了广泛的应用。
28. Many researchers indicated that natural abundance of carbon isotopes, in particular radiocarbon, is useful tracers in the study of the soil carbon cycle.
    碳同位素特别是14C可作为研究土壤碳动力学的理想示踪剂；
29. Radiocarbon ages of soils in China
    我国土壤放射性碳年龄

noun

1. a radioactive isotope of carbon

   Synonym:    carbon 14