separation of uranium isotopes 铀同位素分离
photo-separating uranium isotopes 光分离铀同位素
uranium-series isotopes 铀系同位素
uranium and thorium isotopes 铀钍同位素的
There are different kinds, or isotopes, of uranium, and the type used in nuclear power plants is called uranium-235, because these atoms are easiest to split in two.
铀有许多不同的种类，或称同位素，而在核电站中所使用的是铀235这一类，因为这些的原子最容易一分为二。
Deep underneath your feet is a hellish stone soup, kept hot by a torrent of radiation from poisonous isotopes of uranium, thorium and potassium in the earth's superheated mantle.
我们脚下深处是地狱般的岩石汤，在温度非常高的地球地幔中，有毒的铀、钍和钾元素的同位素释放出的辐射流不断地对这些岩石汤进行加热，使其保持高温。
The uranium or plutonium isotopes are referred to as "fissile," which means we can use them to induce fission by bombarding them with free neutrons.
铀或钚的同位素被称为裂变材料，即我们可以利用自由中子去轰击它们来产生裂变反应。
The uranium would then be returned to Tehran for use by a small research reactor making medical isotopes.
VOA: standard.2009.10.19
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
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
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