The absolute fission rates was measured by the depleted uranium fission chamber.

用贫化铀裂变室进行绝对裂变率测量。

youdao

What helium is available is depleted in helium-3 relative to what we see in the sun, because most of Earth's helium-4 is freshly made via natural radioactive decay of the elements uranium and thorium.

当氦衰变成为氦-3相对于我们在太阳里看到的那它就可用了，因为地球上多数的氦-4是通过元素铀和钍自然放射性衰变而造成的。

youdao

It is made up of old fuel rods that have become sufficiently depleted of uranium-235, the isotope that drives a reactor’s main chain reaction, to be no longer useful.

乏燃料由完全耗尽铀-235的旧燃料棒组成，核反应堆的链式反应就是由铀-235激发的。

youdao

He commented that the effects of depleted uranium were a matter of debate among scientists, politicians and campaigners and said the court was not concerned with political or campaigning questions, but with the scientific questions as to Mr David's illness and the effects of depleted uranium.

BBC: NEWS | UK | England | Somerset | Uranium High Court battle resumes

On Tuesday, US Defence Secretary William Cohen reiterated the position of both Washington and London that no link had been proven between depleted uranium and the cases of cancer among former peacekeeping troops.

BBC: News Online

The case for pan-European action against depleted-uranium weapons is less obvious, not least because the evidence that the weapons do cause cancer is disputed.

ECONOMIST: The European Union