Elemental iodine is used in medicine, in synthesizing some organic chemicals, in manufacturing dyes, in analytical chemistry to measure fat saturation and to detect starch, and in photography. The radioactive isotope iodine-131, with an eight-day half-life, is very useful in medicine and other applications

元素碘用于医药、合成有机化学物、制造染料，以及在分析化学中测量脂肪饱和和检测淀粉，还用于摄影术。放射性同位素碘-131的半衰期为8天，在医学和其它应用中都很有用。

属类：化学及生命科学-化学-

Atomic weight :Ratio of the average mass of a chemical element’s atoms to 1/12 the mass of an atom of the carbon-12 isotope .

原子量:原子的相对质量，即某一元素原子的平均质量与某一"标准"的比值。从1961年开始，将一个同位素碳-12的原子质量的1/12定为原子质量的标准单位。

属类：化学及生命科学-化学-

Preliminary Study on Re-Os Isotope Geochemistry of Picrites from Lijiang Area, Yunnan Province

云南丽江苦橄岩Re-Os同位素地球化学初步研究

属类：行业术语-中文论文标题-

isotope separator on-line]

在线同位素分离器,联机同位素分离器

属类：化学及生命科学-医学词汇-

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。

属类：综合句库--

As expected, the researchers found the xenon isotope produced by uranium fission in uranium minerals from this deposit

正如所预料的那样，研究人员发现氙同位素是由这些沉积矿床中的铀矿物裂变产生的。

属类：综合句库--

Heavy water (deuterium oxide):Water composed of two atoms of deuterium (D; a heavy isotope of hydrogen)and one atom of oxygen (O), chemical formula D2O.

重水(亦称氧化氘):由二个氘原子和一个氧原子组成的水，化学式为D2O。

属类：化学及生命科学-化学-

Hydrogen Isotope Analysis of Heavy Water

重水的氢同位素组成分析

属类：行业术语-中文论文标题-

Isotope Mass Spectrum Analysis of Hydrogen and Oxygen in Heavy Water

重水中氢氧同位素的质谱分析

属类：行业术语-中文论文标题-

An image recorded on a photographic film or plate produced by the radiation emitted from a specimen,such as a section of tissue,that has been treated or injected with a radioactively labeled isotope or that has absorbed or ingested such an isotope.

自动射线照相通过一个标本发出辐射而产生于照相胶卷上或底片上的影象，比如组织的一部分，经过处理或用放射性标记的同位素注射或吸收或吞入这样一种同位素

属类：综合句库--