More than two tons of this plutonium isotope were generated within the Oklo deposit.

1、

After calibrated by Uranium isotope ratio reference materials, the accuracy and precision are improved.

使用铀同位素标准物质校正质谱计,方法测量铀同位素丰度比的准确度和精密度明显提高.

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2、

The most abundant isotope of hydrogen, H 1, with atomic mass 1.

'氘'.''''.'氢'.''的数量最丰富的一种同位素, h1, 原子质量为1.

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3、

Isotope thickness measurement instrument is composed of radial sources, detector and control instrument.

同位素测厚仪由放射源、探测器、控制仪表三部分组成.

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4、

Its most common form, or isotope, has 146 neutrons.

它最常见的形式或者同位素有146个中子.

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5、

Each element has at least one isotope with unstable nuclei that can undergo radioactive decay.

每个元素至少有一个同位素不稳定原子核可以进行放射性衰变.

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6、

Today, most cyclotrons are used either for instructional purpose or for isotope production.

今天大多数回旋加速器是用在教学上,或者用于同位素生产.

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7、

There are several ways to separate excited from unexcited molecules, thus harvesting the desired isotope.

目前有几种方法可以把受激发分子同未受激发分子分离开, 这样,就可以大量得到我们所需要的同位素了.

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8、

The isotope does occur in nature but only extremely rarely.

钋的同位素在自然界中的确存在,但是相当罕见.

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9、

The Mujiazhuang copper deposit with high radioactive lead isotope area of the South Qinling Orogenic Belt.

铅同位素结果研究表明,穆家庄铜矿矿石铅和近矿围岩岩石铅具有富含放射性成因铅的特点.

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10、

The image obtained on development shows the distribution of the isotope in the tissue.

这项技术可以显示出组织中同位素的分布情况.

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11、

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

核化学: 放射性化学品, 辐射化学, 辐射化学, 同位素化学, 核化学.

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12、

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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13、

Simmons : Get me a sample and some isotope readings.

弄些样本和同位素读数.

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14、

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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15、

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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16、

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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17、

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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18、

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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19、

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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20、

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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