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单词 plutonium
释义

Definition of plutonium in English:

plutonium

noun pluːˈtəʊnɪəmpluˈtoʊniəm
mass noun
  • The chemical element of atomic number 94, a dense silvery radioactive metal of the actinide series, used as a fuel in nuclear reactors and as an explosive in nuclear fission weapons. Plutonium only occurs in trace amounts in nature but is manufactured in nuclear reactors from uranium-238.

    Example sentencesExamples
    • Experts say that breathing in even the tiniest amounts of plutonium can increase the risk of cancer, especially among children.
    • To develop a comprehensive set of nuclear weapons, enriched plutonium and uranium are needed.
    • These were bombarded with neutrons which converted the uranium to plutonium.
    • Accidents could result in explosions which could spread plutonium and other harmful radioactivity over large areas, it says.
    • The amount of plutonium you need for a bomb is the size of a grapefruit and weighs about 20 pounds.
    • The plant reprocesses deadly plutonium to make fuel for nuclear power stations.
    • The waste from a defunct reactor is full of plutonium, a highly toxic metal used as the explosive in atomic bombs.
    • Some had received large doses of densely ionizing radiation while processing plutonium.
    • No one is proposing to make bombs out of the small amount of plutonium produced.
    • Reprocessing is only for the purpose of harvesting plutonium to make weapons.
    • The only manufacturing left on the site when reprocessing goes will be the plant for making nuclear fuel from plutonium and uranium oxides.
    • A highly radioactive solution of water, plutonium and uranium is constantly leaking out.
    • Thus, even today, it has only enough plutonium for one or two crude nuclear devices.
    • The use of Australian uranium always involves the production of plutonium.
    • Part of the research involved injecting a number of people with radioactive plutonium.
    • While plutonium can be used in nuclear weapons it also has civilian purposes, including power generation.
    • Workers at the facility were exposed to radiation as well as the chemicals uranium, plutonium and fluorine.
    • The difference is the commercial grade is different from the weapons grade plutonium.
    • No one is going to steal our plutonium - it is too well guarded, too hard to handle, too dangerous.
    • Given enough plutonium or enriched uranium, he thought they might have been able to produce a bomb in two to three years.

Origin

1940s: from Greek 'Pluto', on the pattern of neptunium, being the next planet beyond Neptune.

Rhymes

ammonium, euphonium, harmonium, pandemonium, pelargonium, polonium, zirconium
 
 

Definition of plutonium in US English:

plutonium

nounpluˈtoʊniəmplo͞oˈtōnēəm
  • The chemical element of atomic number 94, a dense silvery radioactive metal of the actinide series, used as a fuel in nuclear reactors and as an explosive in nuclear fission weapons. Plutonium only occurs in trace amounts in nature but is manufactured in nuclear reactors from uranium-238.

    Example sentencesExamples
    • The plant reprocesses deadly plutonium to make fuel for nuclear power stations.
    • Some had received large doses of densely ionizing radiation while processing plutonium.
    • Experts say that breathing in even the tiniest amounts of plutonium can increase the risk of cancer, especially among children.
    • The difference is the commercial grade is different from the weapons grade plutonium.
    • No one is going to steal our plutonium - it is too well guarded, too hard to handle, too dangerous.
    • These were bombarded with neutrons which converted the uranium to plutonium.
    • The waste from a defunct reactor is full of plutonium, a highly toxic metal used as the explosive in atomic bombs.
    • Part of the research involved injecting a number of people with radioactive plutonium.
    • Accidents could result in explosions which could spread plutonium and other harmful radioactivity over large areas, it says.
    • To develop a comprehensive set of nuclear weapons, enriched plutonium and uranium are needed.
    • The use of Australian uranium always involves the production of plutonium.
    • Workers at the facility were exposed to radiation as well as the chemicals uranium, plutonium and fluorine.
    • No one is proposing to make bombs out of the small amount of plutonium produced.
    • Given enough plutonium or enriched uranium, he thought they might have been able to produce a bomb in two to three years.
    • The only manufacturing left on the site when reprocessing goes will be the plant for making nuclear fuel from plutonium and uranium oxides.
    • Thus, even today, it has only enough plutonium for one or two crude nuclear devices.
    • A highly radioactive solution of water, plutonium and uranium is constantly leaking out.
    • While plutonium can be used in nuclear weapons it also has civilian purposes, including power generation.
    • The amount of plutonium you need for a bomb is the size of a grapefruit and weighs about 20 pounds.
    • Reprocessing is only for the purpose of harvesting plutonium to make weapons.

Origin

1940s: from Greek ‘Pluto’, on the pattern of neptunium, being the next planet beyond Neptune.

 
 
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更新时间:2024/9/20 21:26:11