热门资讯...
热文观察...
  • “pyncon”的英英意思
    “pyncon”的英英意思
    单词 pyncon 释义 pyncheon, pynconobs. ff. pinson1 and pinson2.{var l=document.getElementsB......
  • “居宅暗沟”英文翻译
    “居宅暗沟”英文翻译
    字词 居宅暗沟 释义 【医】 house drain 　 汉译英翻译词典收录405719条汉英翻译词条，基本涵盖了......
  • “居吉叶尔氏血清”英文翻译
    “居吉叶尔氏血清”英文翻译
    字词 居吉叶尔氏血清 释义 【医】 Cuguillere's serum 　 汉译英翻译词典收录405719条汉英翻译词......
  • “pyncheon”的英英意思
    “pyncheon”的英英意思
    单词 pyncheon 释义 Seepyncon 　 英语词典包含277258条英英释义在线翻译词条，基本涵盖了全部常......
  • “居先”英文翻译
    “居先”英文翻译
    字词 居先 释义 forego; foregone; precedence; prior; prior to\n相关词组:\n 居先的 　 汉译英......
  • “屏内阻”英文翻译
    “屏内阻”英文翻译
    字词 屏内阻 释义 【电】 internal resistance of tube 　 汉译英翻译词典收录405719条汉英翻译词......
字典帮 >教育工具 >英语词汇“pyrazoline”的英英意思、用法、释义、翻译、读音、例句、短语、词组、英语词典-本地帮
2025-09-06

“pyrazoline”的英英意思

单词 pyrazoline
释义 pyrazoline Chem.|paɪər-, pɪˈræzəlɪn|
[ad. G. pyrazolin (L. Knorr 1887, in Ann. d. Chem. CCXXXVIII. 144): see prec. and -ine5.]
Any of three isomeric compounds, C3H6N2, which are dihydro derivatives of pyrazole; spec. CH2·CH2·CH:N·NH (2-pyrazoline), a colourless basic liquid, the only one of the three so far prepared; also, any substituted derivative of any of these compounds.
1887[see pyrazole].1938R. C. Fuson in H. Gilman Org. Chem. I. i. 30 Pyrazolines are unstable toward heat and decompose to give cyclopropane derivatives.1961G. M. Badger Chem. Heterocyclic Compounds v. 223 Pyrazolines are much less stable than the corresponding pyrazoles and are attacked by oxidizing agents.1967C. H. Jarboe in R. H. Wiley Pyrazoles vi. 177 Examples of each of the three tautomeric pyrazoline structures..are well known, 2-pyrazoline being by far the most common.1968[see pyrazolone].
“pyrazoline”的英英意思

　

英语词典包含277258条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。

　


相关内容11：

“屋顶起重机”英文翻译

“居住者”英文翻译

“居住证”英文翻译

“pyropectic”的英英意思

“屋顶钟”英文翻译


相关热词搜索：pyrazoline英英词典英英释义英语词汇意思用法释义英语

友情链接