英文字典,中文字典,查询,解释,review.php


英文字典中文字典51ZiDian.com



中文字典辞典   英文字典 a   b   c   d   e   f   g   h   i   j   k   l   m   n   o   p   q   r   s   t   u   v   w   x   y   z       


安装中文字典英文字典辞典工具!

安装中文字典英文字典辞典工具!










  • What is Uranium? How Does it Work? - World Nuclear Association
    Uranium is a heavy metal which can be used as an abundant source of concentrated energy Uranium occurs in most rocks in concentrations of 2-to-4 parts per million and is as common in the Earth's crust as tin, tungsten and molybdenum
  • Nuclear Fuel Facts: Uranium - Department of Energy
    Uranium is now used to power commercial nuclear reactors that produce electricity and to produce isotopes used for medical, industrial, and defense purposes around the world
  • Uranium - Wikipedia
    Many contemporary uses of uranium exploit its unique nuclear properties Uranium is used in nuclear power plants and nuclear weapons because it is the only naturally occurring element with a fissile isotope – uranium-235 – present in non-trace amounts
  • Uranium | Definition, Properties, Uses, Facts | Britannica
    These and other recoverable uranium ores, as sources of nuclear fuels, contain many times more energy than all the known recoverable deposits of fossil fuels One pound of uranium yields as much energy as 1 4 million kilograms (3 million pounds) of coal
  • Uranium: what it is, what it is for, types and characteristics
    Uranium is best known for its role in nuclear power generation and nuclear weapons manufacturing, as it is the key element in nuclear fission In addition, it has applications in medicine, scientific research and aerospace technology
  • Uranium (nuclear) - U. S. Energy Information Administration (EIA)
    All nuclear power plants use nuclear fission, and most nuclear power plants use uranium atoms During nuclear fission, a neutron collides with a uranium atom and splits it, releasing a large amount of energy in the form of heat and radiation
  • Uranium: - Institute for Energy and Environmental Research
    Uranium is the principal fuel for nuclear reactors and the main raw material for nuclear weapons Natural uranium consists of three isotopes: uranium-238, uranium-235, and uranium-234 Uranium isotopes are radioactive
  • Nuclear Energy Factsheet - Center for Sustainable Systems
    Nuclear power plants generate electricity by using controlled nuclear fission chain reactions to heat water and produce steam that powers turbines Nuclear is often labeled “clean” energy because no greenhouse gases (GHGs) or air emissions are released from the power plant


















中文字典-英文字典  2005-2009