简体中文版 | English Version | EBooks(電子書)

EnMama.net

Silicon

['sɪlɪk(ə)n] or ['sɪlɪkən]

解釋/意思:

(noun.) a tetravalent nonmetallic element; next to oxygen it is the most abundant element in the earth's crust; occurs in clay and feldspar and granite and quartz and sand; used as a semiconductor in transistors.

校對:西蒙--From WordNet

解釋/意思:

(n.) A nonmetalic element analogous to carbon. It always occurs combined in nature, and is artificially obtained in the free state, usually as a dark brown amorphous powder, or as a dark crystalline substance with a meetallic luster. Its oxide is silica, or common quartz, and in this form, or as silicates, it is, next to oxygen, the most abundant element of the earth's crust. Silicon is characteristically the element of the mineral kingdom, as carbon is of the organic world. Symbol Si. Atomic weight 28. Called also silicium.

安娜贝尔整理

例句/造句/用法:

校對:凯尔西

About(关于我们)|Sitemap(网站地图)

Copyright © 2018 EnMama.net. All rights reserved.