英语词汇“、ir、”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

单词

-ir-

释义

-ir- Chem.
[See quot.]
A formative element in the names of three-membered heterocyclic ring systems. A systematic nomenclature is generated by appending to -ir- a prefix (or prefixes) representing the hetero-atom(s), and one of the suffixes -ane 2, -ene, -idine c, or -ine⁵, to indicate saturation or unsaturation and the presence or absence of a nitrogen atom in the ring. (Cf. -irane, -irene, -iridine, -irine.)
1928A. M. Patterson in Jrnl. Amer. Chem. Soc. L. 3079 With a precedent already set for et (four members, compare ‘tetra’) and with ol (five members) and in (six members) already confirmed by usage, it would only be necessary to supply three syllables more to cover all but rare cases. These might be ir (from ‘tri’, reversed) for three members.Ibid., Examples of the resulting names and combining forms are: oxirene, oxirane (ethylene oxide).

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：

“-ir-”的英英意思

“蒸发器－冷凝器壳体”英文翻译

“蒸汽滚筒”英文翻译

“i-quasched”的英英意思

“i-punished”的英英意思

“i-pyȝt”的英英意思

友情链接