The rods would be used to power a research reactor in the Iranian capital making medical isotopes.

VOA: standard.2009.10.21

Isotopes have the same chemical identity but different nuclear properties.

同位素有相同的化学特性,但是原子属性不同。

麻省理工公开课 - 固态化学导论课程节选

If they are found on the same place, it is iso-topos. These are called isotopes.

如果是在同一个位置，按照国际惯例，它们被叫做同位素。

麻省理工公开课 - 固态化学导论课程节选

Under the scheme, Russia would further enrich the uranium to the 20 per cent purity needed for use in a research reactor in Tehran which produces medical isotopes but is running out of fuel.

VOA: standard.2009.10.24

A couple of other things about hydrogen: hydrogen also, like other elements, has isotopes and we already saw that in 1766, Cavendish isolated atomic hydrogen and enunciated some of its properties.

一些关于氢的东西：,氢气，就像其他元素一样，有同位素，人们在1766年就发现了这一点，卡文迪许分离出原子氢,并且阐述了它的一些性质。

麻省理工公开课 - 固态化学导论课程节选

She urged the Tehran government to give a definitive answer to an offer by major powers to further process Iranian enriched uranium outside that country to resupply a Tehran reactor, running low on fuel, that produces isotopes for medical purposes.

VOA: standard.2009.11.09

We talked about isotopes, and whatnot.

我们已经讨论了同位素等。

麻省理工公开课 - 固态化学导论课程节选