请输入您要查询的英文单词:

 

单词 beryllium
释义
be·ryl·li·um (bə-rĭlē-əm)
n. Symbol Be
A high-melting, lightweight, corrosion-resistant, rigid, steel-gray metallic element used as an aerospace structural material, as a moderator and reflector in nuclear reactors, and in a copper alloy used for springs, electrical contacts, and nonsparking tools. Atomic number 4; atomic weight 9.0122; melting point 1,287°C; boiling point 2,470°C; specific gravity 1.848; valence 2. See Periodic Table.

[From BERYL.]
随便看

 

英语词典包含135693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:2025/3/22 9:31:06