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:

technetium    
n. 锝



technetium
n 1: a crystalline metallic element not found in nature; occurs
as one of the fission products of uranium [synonym:
{technetium}, {Tc}, {atomic number 43}]

technetium
Symbol: Tc
Atomic number: 43
Atomic weight: (98)
Radioactive metallic transition element. Can be detected in some stars
and
the fission products of uranium. First made by Perrier and Segre by
bombarding molybdenum with deutrons, giving them Tc-97. Tc-99 is the
most
stable isotope with a half-life of 2.6*10^6 years. Sixteen isotopes are
known. Organic technetium compounds are used in bone imaging. Chemical
properties are intermediate between rhenium and manganese.


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


  • YouTube
    Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube
  • www. youtube. co. uk
    www youtube co uk
  • YouTube
    About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy Safety How YouTube works Test new features NFL Sunday Ticket © 2026 Google LLC
  • YouTube - YouTube
    Featured Creators: @Olandria-Carthen @AuburnTigers @BrellaunteVEVO @davidgilbert1835 @loveisalndxoxo @menwiththepot @QUENBLACKWELL Credits: Created Produced by Somehow Studios Co-founder,
  • YouTube - Apps on Google Play
    Get the official YouTube app on Android phones and tablets See what the world is watching -- from the hottest music videos to what’s popular in gaming, fashion, beauty, news, learning and more
  • YouTube – Applications sur Google Play
    Téléchargez l'application YouTube officielle sur votre téléphone ou tablette Android Découvrez les contenus regardés partout dans le monde : des clips musicaux du moment aux vidéos populaires
  • YouTube - Apps on Google Play
    Experience your favourite YouTube channels, videos and creators in extended reality
  • YouTube Music
    With the YouTube Music app, enjoy over 100 million songs at your fingertips, plus albums, playlists, remixes, music videos, live performances, covers, and hard-to-find music you can’t get
  • YouTube - Apps en Google Play
    Instala la app oficial de YouTube para teléfonos y tablets Android Descubre lo que está mirando el mundo, desde los videos musicales más populares hasta las tendencias en videojuegos, moda,
  • YouTube - Wikipedia
    Established media, news, and entertainment corporations have also created and expanded their visibility on YouTube channels to reach bigger audiences YouTube has had unprecedented social impact, influencing popular culture, internet trends, and creating multimillionaire celebrities





中文字典-英文字典  2005-2009