The petrified wood fossils have been preserved for millions of years by the process of petrification, a process which turns the wood into quartz crystal, harder than steel.
英
美
释义
石化木材的化石自石化过程起,已经历了数百万年,石化过程会将木材转变成为比钢铁还要坚硬的石英晶体。
把海词放在桌面上,查词最方便
触屏版
|
电脑版
©2003 - 2024 海词词典(Dict.cn)
立即下载