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
IUPAC查看　IUPAC　在百度字典中的解释百度英翻中〔查看〕
IUPAC查看　IUPAC　在Google字典中的解释Google英翻中〔查看〕
IUPAC查看　IUPAC　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:


  • International Union of Pure and Applied Chemistry - Wikipedia
    IUPAC was established in 1919 as the successor of the International Congress of Applied Chemistry for the advancement of chemistry Its members, the National Adhering Organizations, can be national chemistry societies, national academies of sciences, or just other bodies representing chemists
  • IUPAC Nomenclature Home Page
    The full text of IUPAC and IUBMB organic and biochemical nomenclature recommendations
  • PubChem
    PubChem is the world's largest collection of freely accessible chemical information Search chemicals by name, molecular formula, structure, and other identifiers Find chemical and physical properties, biological activities, safety and toxicity information, patents, literature citations and more
  • What We Do - IUPAC - IUPAC | International Union of Pure and Applied . . .
    The International Union of Pure and Applied Chemistry (IUPAC) is the world authority on chemical nomenclature, terminology (including the naming of new elements in the periodic table), standardized methods for measurement, atomic weights and many other critically-evaluated data
  • Chemistry International | Oct 2025 | IUPACs 2025 Top Ten . . . - Issuu
    On 14 July 2025, at the opening of the IUPAC World Chemistry Congress, the International Union of Pure and Applied Chemistry (IUPAC) officially launched the Guiding Principles of Responsible
  • ATOMIC WEIGHTS OF THE ELEMENTS 2023
    ATOMIC WEIGHTS OF THE ELEMENTS 2023 These tables are based on the 2021 table with changes from the 2019 table for the values of Ar, Hf, Ir, Pb and Yb and changes to the uncertainty for Al, Au, Co, F, Ho, Mn, Nb, Pa, Pr, Rh, Sc, Tb, Tm, and Y The values of Gd, Lu and Zr were revised and published in 2024 https: iupac qmul ac uk AtWt World Wide Web version of atomic weight data originally
  • 4. 6. 1: Naming Ionic Compounds - Chemistry LibreTexts
    The International Union of Pure and Applied Chemists (IUPAC) dictates that an ion’s positive charge is indicated in parentheses after the element name, followed by the word ion
  • Brief Guides to Nomenclature - IUPAC | International Union of Pure and . . .
    IUPAC provides recommendations on many aspects of nomenclature The basics of organic nomenclature, of inorganic nomenclature and polymer nomenclature are summarized in a collection of Brief Guides accessible below





中文字典-英文字典  2005-2009