Nuclear Chemistry: radioactive chemicals, radiation chemistry, radiation chemistry, isotope chemistry, nuclear chemistry.

This indium isotope was created at the same time as the earth.

这种铟同位素与地球产生在同一时代.

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Simmons : Get me a sample and some isotope readings.

弄些样本和同位素读数.

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Under 0.1 ~10 isotope ratio range and 95 % confidence, the relative expanded uncertainty of the technique %.

最后得出在铀同位素丰度比为0.1～10的范围内95%的置信水平下, 该方法的相对扩展不确定度为0.10%.

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Isotope tracing technology was used on animal experiment since 1920 s.

同位素示踪技术是20世纪20年代开始用于动物试验.

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An isotope log of water injection profile is affected by many factors, specially the string contamination.

同位素注水剖面测井受多种因素, 特别是管柱沾污的影响,使得测井资料质量差或根本无法解释.

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The inferno spewed a deadly plume of radioactive isotopes into the atmosphere.

这个象炼狱般的地方将一缕致死的放射性同位素喷入大气层.

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A detailed search for the isotopes of all the elements required a more preci se technique.

仔细研究所有元素的同位素需要更精密的技术.

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Later he named these separate forms isotopes.

后来他称这些不同的形式为同位素.

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There are two main types of uses of radioactive isotopes in biochemistry.

在生物化学中,放射性同位素主要有两方面的应用.

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Tritium is one of the mildest radioactive isotopes.

氚是最和缓的放射性同位素之一.

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Indirect ionization by neutrons can also result from fission of plutonium or uranium isotopes.

通过使钚或铀同位素裂变,中于也能产生间接的电离作用.

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The large number of radioactive isotopes among the heavy elements fit into three series.

重元素中的大量放射性同位素分属于三个系列.

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Extensive research has shown that fractional atomic masses always mean mixture of isotopes.

进一步的研究揭示出:部分原子质量常是同位素的混合物.

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For that reason, however, separating the isotopes of an element can be exceedingly difficult and costly.

不过, 也正因为这样, 要把某一元素的各同位素分离开来,就可能是极其困难的事,要付出很高的代价才能办到.

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The radium isotopes are absorbed to an appreciable extent through the human and animal gut.

镭的同位素通过人和动物的肠子时有很大部分被吸收.

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The interval is two mass units because these isotopes of the elements differ by two neutrons.

因为这些元素的同位素相差两个中子,所以其间隔为两个质量单位.

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It is important to avoid the use of uranium compounds of unspecified isotopic composition.

要避免使用那种非专用的同位素成份的铀化合物.

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An isotopic analysis of the grains has made that fear come true.

一项对这些颗粒的同位素分析让这种担心成真了.

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The isotopic signatures of most ancient limestones indicated the same process.

大多数古代石灰岩的同位素特征说明了同样的过程.

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The environmental isotopic tracer is a new technique developed in recent years.

环境同位素示踪技术是近几年新发展起来的一项新技术.

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