放射性碳

Nowadays scientists can answer many questions about the past through a technique called radiocarbon, or carbon-14, dating.

现在科学家们能通过一种被称为放射性碳，即C-14的一种技术来测定年代，回答许多关于过去的事情

This was proven by the discovery of a silt-preserved shipwrecked Arab dhow in the Gaspar Strait near Belitung, which had 63,000 pieces of Tang gold, silver, and ceramics (including a Changsha bowl inscribed with a date:"16th day of the seventh month of the second year of the Baoli reign", or 826 AD, roughly confirmed by radiocarbon dating of star anise at the wreck).

这是证明了，他们发现了一个淤泥保存海难阿拉伯独桅帆船在附近勿加斯帕尔海峡，这6.3万件唐金，银，陶瓷（包括长沙碗刻有一个日期：" 16天的第7个月第二年的宝利统治"，或826年，大致确认了放射性碳测年八角茴香的破坏）。

As a result, all living organisms absorb an equilibrium concentration of radioactive carbon.

作为一个结果，所有的活生物体吸收平衡浓度放射性碳。

The process, sometimes referred to as "radiocarbon reading," involves measuring carbon decay.

过程中，有时称为"放射性碳含量，"碳涉及测量衰变。

Accelerators are also used for radioisotope production, cancer therapy, Biological sterilization, and one form of radiocarbon dating.

加速器也用于制造放射性同位素、治疗癌症、生物消毒及放射性碳定年。

The bacterial bioplastic coating argument is the strongest, as there have been cases in which ancient textiles have yielded radiocarbon dates much younger than other artifacts in the same sites—most notably in the instance of mummy 1770 in the British Museum, whose bones dated 800 to 1,000 years older, according to the radiocarbon tests, than the textile in which they were wrapped.

细菌性的&原生体覆盖物&的争论来得更激烈，已经有案例，就是古代纺织品的放射性碳年代测定比其他同样大小的史前器物的年代要晚得多——最值得注意的例子就是1770年陈列在大英博物馆的木乃伊，根据放射性碳年代测定，骨骼的年代为800至1000年之久，它们都被包裹着。

Working with a captive breeding colony in Germany, Christian Voigt of the Leibniz Institute for Zoo and Wildlife Research in Berlin and Professor John Speakman of the University of Aberdeen fed long-tongued bats sugar containing non-radioactive carbon-13 and then measured the amount of carbon-13 in the bats' exhaled breath.

德国莱布尼兹动物园与野生动物研究所的Christian Voigt与阿伯丁大学的教授John Speakman一起共同进行了该项研究，他们用含有非放射性碳13的糖类食物来喂食长舌蝙蝠，然后检测蝙蝠呼出的气体中碳13的含量。

Comparing radiocarbon readings with the natural time clock of the tree's year by year rings, showed the radiocarbon dating system to be inaccurate.

放射性污染与自然相的时钟树的逐年戒指、该系统将放射性碳测年结果不准确。

Radiocarbon dating is basically this: a radioactive isotope of carbon, C-14, is formed in the atmosphere by cosmic rays.

放射性碳测年，基本上这个：放射性碳同位素、碳14是由大气中形成的宇宙射线。

The radioactive carbon atoms weigh 14 atomic units, whereas run-of-the-mill ones weigh 12 units.

放射性碳元素的原子量是14个单位，一般碳元素的原子量是12个单位。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。