英文字典中文字典


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       







请输入英文单字,中文词皆可:


请选择你想看的字典辞典:
单词字典翻译
C14查看 C14 在百度字典中的解释百度英翻中〔查看〕
C14查看 C14 在Google字典中的解释Google英翻中〔查看〕
C14查看 C14 在Yahoo字典中的解释Yahoo英翻中〔查看〕





安装中文字典英文字典查询工具!


中文字典英文字典工具:
选择颜色:
输入中英文单字

































































英文字典中文字典相关资料:


  • Carbon-14 - Wikipedia
    ^ Lowe D (1989) "Problems associated with the use of coal as a source of C14-free background material" Radiocarbon 31 (2): 117–120 Bibcode: 1989Radcb 31 117L doi: 10 1017 S0033822200044775 Archived from the original on 2013-07-24 ^ Jull AJ, Barker D, Donahue DJ (1985)
  • C14 News Israel (English Edition) - YouTube
    Mark Levin | "You better dig a very, very deep hole and stay there like the cockroach you are " C14 News Israel (English Edition) and One on One with Libby Alon 4 5K views1 month ago
  • Carbon-14 - isotopic data and properties - ChemLin
    Radioactive Decay Carbon-14 undergoes beta decay with emission of an electron and an electron antineutrino: 14 C → 14 N + e - + ve + 156 476 keV The decay product is the stable nuclide Nitrogen-14 Half-life T ½ = 5700 (30) a respectively 1 79874478055 × 1011 seconds s
  • Carbon 14 - an overview | ScienceDirect Topics
    Carbon-14 is a radioactive isotope of carbon, created in the atmosphere through the bombardment of nitrogen by cosmic rays, and is used in radiocarbon dating to determine the age of organic substances by measuring its decay over time AI generated definition based on: The Global Carbon Cycle and Climate Change (Second Edition), 2023
  • Carbon-14 | CH4 | CID 26873 - PubChem
    Carbon-14, 14C, or radiocarbon, is a radioactive isotope of carbon with a nucleus containing 6 protons and 8 neutrons Its presence in organic materials is the basis of the radiocarbon dating method pioneered by Willard Libby and colleagues (1949) to date archaeological, geological and hydrogeological samples Carbon-14 was discovered on 27 February 1940, by Martin Kamen and Sam Ruben at the
  • C-14 Standard Operating Procedures - SUNY Upstate
    Carbon-14 is a commonly used radionuclide with a half-life of 5,730 years, emitting only beta particles with a maximum energy of 0 156 MeV (Million Electron Volts) and an average energy of 0 049 MeV The beta particles from C-14 travel a maximum of 22 cm Concerns The major concern with using C-14 is that it cannot be easily monitored during it's use, therefore, special precautions are needed
  • Carbon-14 - Production - Properties - Decay | nuclear-power. com
    Carbon-14 is a naturally occurring isotope Radioactive carbon-14 has a half-life of 5730 years and undergoes β− decay Carbon-14 is continuously formed in the upper atmosphere
  • Atmospheric carbon-14 measurements reveal natural production rate by . . .
    Lawrence Livermore National Laboratory researchers have measured the carbon-14 isotope (14C) produced by cosmic rays in the stratosphere and found its production rate is less than most previous estimates The team, led by Kristie Boering of the University of California, Berkeley and including Lawrence Livermore National Laboratory scientists, measured the 14C content of carbon dioxide in air
  • Radioactive Decay of Carbon-14 | Open Medscience
    Radioactive decay of Carbon-14 reveals ages of ancient artefacts, transforming both archaeology and environmental science
  • HP-26: C-14 - Worcester Polytechnic Institute
    Carbon-14 is a commonly used radionuclide with a half-life of 5730 years, emitting only beta particles with a maximum energy of 0 156 MeV (Million Electron Volts) and an average energy of 0 049 MeV The beta particles from C-14 travel a maximum of 22 cm The major concern with using C-14 is that it





中文字典-英文字典  2005-2009