全部

1·Such anomalies are due to the relative abundance of the isotopes or varieties of each element.

这种反常现象是由于同位素比较丰富或者各个元素比较多样化。

2·The isotopes of a given element have the same chemical properties but slightly different physical properties.

一个特定元素的同位素具有相同的化学特征，但在物理性质上有一些细微差异。

3·Most hydrogen and oxygen atoms in water are stable, but traces of both elements are also present as heavier isotopes.

在水中大多数氢原子和氧原子是稳定的，但这两个元素也有微量以较重的同位素形式存在。

4·She had often carried test tubes containing radioactive isotopes in her pocket, remarking on the pretty blue-green light they gave off.

她经常把装有放射性同位素的试管放在口袋里，对试管里发出的漂亮的蓝绿光赞不绝口。

5·By measuring the proportion of heavier hydrogen and oxygen isotopes along a strand of hair, scientists can construct a geographic timeline.

通过测量一束头发上较重的氢和氧同位素的比例，科学家可以构建一个地理时间轴。

6·All the isotopes of a given element have the same number of protons, but differ in their number of neutrons, and hence in their atomic mass.

给定元素的所有同位素都含有相同的质子数，但它们的中子数不同，因此它们的原子质量也不同。

7·Heavier isotopes tend to be left behind when water evaporates from the ocean surfaces, the remaining ocean water becomes progressively enriched in oxygen 18.

当水从海洋表面蒸发时，往往会留下较重的同位素，所以剩余的海水会逐渐富含氧18这种同位素。

8·Researchers' clues to the Eemian climate come from measurements of the ratios of two slightly different types of oxygen, isotopes oxygen-16 and oxygen-18, preserved in the GRIP core.

研究人员对间冰期气候的线索来自保存在 GRIP 冰芯中的两种略微不同类型的氧——即同位素氧-16和氧-18的比率。

9·About the same time, though, scientists realized comets might contain decaying radioactive isotopes that could have warmed cometary interiors to temperatures that caused the interiors to evolve.

然而，大约在同一时间，科学家们意识到彗星可能含有衰变的放射性同位素，这些同位素可能使彗星内部的温度升高到导致内部进化的温度。

10·We talked about isotopes, and whatnot.

我们已经讨论了同位素等。

同位素

1·Such anomalies are due to the relative abundance of the isotopes or varieties of each element.

这种反常现象是由于同位素比较丰富或者各个元素比较多样化。

2·The isotopes of a given element have the same chemical properties but slightly different physical properties.

一个特定元素的同位素具有相同的化学特征，但在物理性质上有一些细微差异。

3·She had often carried test tubes containing radioactive isotopes in her pocket, remarking on the pretty blue-green light they gave off.

她经常把装有放射性同位素的试管放在口袋里，对试管里发出的漂亮的蓝绿光赞不绝口。

4·All the isotopes of a given element have the same number of protons, but differ in their number of neutrons, and hence in their atomic mass.

给定元素的所有同位素都含有相同的质子数，但它们的中子数不同，因此它们的原子质量也不同。

5·Researchers' clues to the Eemian climate come from measurements of the ratios of two slightly different types of oxygen, isotopes oxygen-16 and oxygen-18, preserved in the GRIP core.

研究人员对间冰期气候的线索来自保存在 GRIP 冰芯中的两种略微不同类型的氧——即同位素氧-16和氧-18的比率。

核素

1·In any event, Iran could buy medical isotopes it needs from private suppliers, as most other countries do.

不管怎样，伊朗可以从私人供应商那里买到医用核素，正像大部分其他国家那样。

2·Or they may move into the area of health physics to help physicians to find new ways to use atomic isotopes to diagnose and treat disease.

他们也能进入保健物理学领域，帮助内科医生运用原子核素找到诊断和治疗疾病的新途径。

3·Radionuclides or isotopes for medical or industrial purposes, such as Cobalt 60, Caesium 131 and lodine 132.

放射性核素或核素用于医疗或工业目的，例如︰钴60、铯131和碘132。

4·Radionuclides or isotopes for medical or industrial purposes, such as Cobalt 60, Caesium 131 and lodine 132.

放射性核素或核素用于医疗或工业目的，例如：钴60、铯131和碘132。

(1)stable isotope稳定同位素

(1)radioactive isotope放射性同位素

(1)isotope analysis同位素分析

(1)isotope separation同位素分离

(1)isotope geochemistry同位素地球化学

(1)isotope effect同位素效应