请输入您要查询的百科知识:

 

词条 dragon's blood
释义
dragon's blood
resin
red resin obtained from the fruit of several palms of the genus Daemonorops and used in colouring varnishes and lacquers. Once valued as a medicine in Europe because of its astringent properties, dragon's blood now is used as a varnish for violins and in photoengraving for preventing undercutting of the printing surface during etching.
Daemonorops draco, a rattan palm native to Malaysia and Indonesia, produces much of the dragon's blood of commerce. Other sources are Dracaena cinnabari of the island of Socotra, east of Somalia; Dracaena draco of the Canary Islands; Croton draco of Mexico; and Croton lechleri of Peru and Ecuador, where it is used locally to heal wounds and as an astringent.
随便看

 

百科全书收录100133条中英文百科知识,基本涵盖了大多数领域的百科知识,是一部内容开放、自由的电子版百科全书。

 

Copyright © 2004-2023 Newdu.com All Rights Reserved
更新时间:2025/2/19 17:13:44