请输入您要查询的英文单词:

 

单词 pentone
释义

pentonen.

Origin: Formed within English, by derivation. Etymons: penta- comb. form, -one suffix.
Etymology: < penta- comb. form + -one suffix.
Chemistry. Obsolete.
An unsaturated liquid hydrocarbon with the formula C5H6.
ΚΠ
1876 W. A. Tilden Introd. Study Chem. Philos. 83 Pentone.
1877 H. Watts Fownes's Man. Chem. II. 64 Valylene or pentone, C5H6,..is formed by the action of alcoholic potash on valerylene dibromide.
This entry has been updated (OED Third Edition, September 2005; most recently modified version published online June 2018).
<
n.1876
随便看

 

英语词典包含1132095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。

 

Copyright © 2004-2022 Newdu.com All Rights Reserved
更新时间:2024/12/25 0:37:25