请输入您要查询的英文单词:

 

单词 ngai camphor
释义

> as lemmas

Ngai camphor
common camphor (C10H16O) is prepared by distillation and sublimation from Camphora officinarum ( Laurus camphora), a tree indigenous to Java, Sumatra, Japan, etc., and from other lauraceous trees. Many essential oils, as those of feverfew, lavender, etc., deposit varieties of camphor differing only in their action on polarized light. Borneo camphor or Borneol (C10H18O) is yielded by Dryobalanops Camphora, family Dipteraceæ, a tree growing in Sumatra and Borneo; it is less volatile than common camphor, and has a mingled camphoraceous and peppery smell. Ngai camphor, of the same chemical composition as Borneol, is produced in China and Burma by the distillation of Blumea balsamifera.extracted from camphorn.
<
as lemmas
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:2024/12/23 2:45:12