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uranium    音標拼音: [jɚ'eniəm]
n. 鈾



uranium
n 1: a heavy toxic silvery-white radioactive metallic element;
occurs in many isotopes; used for nuclear fuels and nuclear
weapons [synonym: {uranium}, {U}, {atomic number 92}]

Uranium \U*ra"ni*um\, n. [NL., from Uranus the planet. See
{Uranus}.] (Chem.)
An element of the chromium group, found in certain rare
minerals, as pitchblende, uranite, etc., and reduced as a
heavy, hard, nickel-white metal which is quite permanent. Its
yellow oxide is used to impart to glass a delicate
greenish-yellow tint which is accompanied by a strong
fluorescence, and its black oxide is used as a pigment in
porcelain painting. Symbol U. Atomic weight 239.
[1913 Webster]

Note: Uranium was discovered in the state of an oxide by
Klaproth in 1789, and so named in honor of Herschel's
discovery of the planet Uranus in 1781.
[1913 Webster] Uran-ocher

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英文字典中文字典相關資料:
  • What is Uranium? | IAEA - International Atomic Energy Agency
    Uranium enrichment is the process, through which the isotopic proportion of U-235 is increased from 0 72 per cent to up to 94 per cent Uranium is considered low-enriched if its isotopic proportion of U-235 remains below 20 per cent
  • Qu’est-ce que l’uranium ? | AIEA - International Atomic Energy Agency
    Si l’uranium est enrichi à plus de 20 %, il est considéré comme hautement enrichi L’uranium avec des teneurs aussi élevées d’isotope 235 U est principalement utilisé dans les réacteurs de propulsion navale (par exemple dans les sous-marins), dans les armes nucléaires et dans certains réacteurs de recherche
  • Uranium production for nuclear reactors | IAEA
    Uranium is the primary fuel for nuclear reactors and must be managed properly, in a safe and sustainable manner Recent annual production of natural uranium world-wide has been between 55,000 and 65,000 tons of uranium metal, similar to the fuel demand Additionally, thorium is also being investigated as a potential alternate source of nuclear
  • Production d’uranium pour les réacteurs nucléaires | AIEA
    L’uranium est le principal combustible utilisé dans les réacteurs nucléaires Il doit être géré correctement, de façon sûre et durable Ces derniers temps, la production annuelle mondiale d’uranium naturel était comprise entre 55 000 et 65 000 tonnes d’uranium métal, soit l’équivalent de la demande en combustible nucléaire
  • What is Nuclear Energy? The Science of Nuclear Power | IAEA
    Uranium is a metal that can be found in rocks all over the world Uranium has several naturally occurring isotopes, which are forms of an element differing in mass and physical properties but with the same chemical properties Uranium has two primordial isotopes: uranium-238 and uranium-235
  • Depleted Uranium | IAEA - International Atomic Energy Agency
    Uranium (chemical symbol U) is a naturally occurring radioactive element In its pure form it is a silver-coloured heavy metal, similar to lead, cadmium and tungsten Like tungsten it is very dense, about 19 grams per cubic centimetre, 70% more dense than lead It is so dense a small 10-centimetre
  • World’s Uranium Resources Enough for the Foreseeable Future, Say NEA . . .
    Global uranium mine production decreased by 10 8% from 2017 to 2018 due to production cuts resulting from poor market conditions but increased slightly by 1% to 54 224 tU in 2019 Furthermore, planned uranium production cuts in early 2020 were deepened by the onset of the COVID-19 pandemic, and its effects could be felt through 2021 and beyond
  • Director General Grossi’s Statement to UNSC on Situation in Iran
    At Natanz, the above-ground part of the Pilot Fuel Enrichment Plant, where Iran was producing uranium enriched up to 60% U-235, has been destroyed Electricity infrastructure at the facility (electrical sub-station, main electric power supply building, emergency power supply and back-up generators) has been destroyed
  • Depleted uranium: sources, exposure and health effects
    Natural uranium consists of a mixture of three radioactive isotopes which are identified by the mass numbers 238U(99 27% by mass), 235U(0 72%) and 234U(0 0054%) Uranium is used primarily in nuclear power plants; most reactors require uranium in which the 235U content is enriched from 0 72% to about 3% The uranium remaining after removal of the
  • Sufficient Uranium Resources Exist, However Investments Needed to . . .
    The Red Book indicates that global identified recoverable uranium resources amounted to 7 934 500 tonnes as of 1 January 2023 These represent all reasonably assured and inferred uranium resources that could be recovered at market prices ranging from $40 to $260 USD KgU (equivalent to $15 to $100 USD lb U 3 O 8) Compared to the total reported





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