uraaniisotoobi U-235 või U-233 suhtes rikastatud uraan
1
uranium containing uranium-235 or uranium-233 or both in an amount such that the abundance ratio of the sum of these isotopes to isotope 238 is greater than the ratio of isotope 235 to isotope 238 occurring in nature. "Enrichment" means the ratio of the combined weight of uranium-233 and uranium-235 to the total weight of the uranium under consideration.
