24小时热门版块排行榜    

查看: 420  |  回复: 1

dtmagp

禁虫 (职业作家)

[求助] 求下面一段文章的翻译

求翻译如下文章:The building block of silica and the silicate structures is the S1O4
tetrahedron, four oxygen atoms at the corners of a regular tetrahedron
with a silicon ion at the center cavity or centroid (Figure 1). The oxygen
ion is so much larger than the S i 4 + ion that the four oxygens of a S1O4 unit
are in mutual contact and the silicon ion is said to be in a tetrahedral hole
(I). Natural silicas can be crystalline, as in quartz, cristobalite, tridymite,
coesite, and stishovite, or amorphous, as in opal. Crystalline silica
polymorphs are divided according to their framework density (SiO2 groups
per 1000 à3 ) into pyknosils and porosils, and the latter are further divided
into clathrasils and zeosils depending on whether the pores are closed or
open, that is, accessible to adsorption .
回复此楼
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

huangzx1314

禁虫 (知名作家)

【答案】应助回帖

★ ★ ★ ★
感谢参与,应助指数 +1
dengwei_19: 金币+1, 专家考核, 谢谢~ 2012-07-12 18:56:10
dtmagp: 金币+3, ★★★★★最佳答案 2012-12-17 19:11:57
首先楼主你发错地方了,翻译的东西有专有的版块儿。

上面的意思比较简单,而且也是基础的东西。里面还有些错别字。

氧化硅和硅酸盐建筑材料的结构是siO4四面体,氧原子位于正四面体的四个角,硅离子位于这个四面体的重心(如图1)。氧离子较Si4+离子大很多,以至于SiO4结构单元中的四个氧离子紧密接触,硅离子位于四面体空隙中。
(1)天然的二氧化硅可以使晶态的,比如:石英,方石英,鳞石英,柯石英,斯石英或者无定形态的,像蛋白石。晶态的二氧化硅根据它们的结构密度()可以分类为致密的或者疏松的,后者又可以通过开孔和闭孔区(通过吸附)分为clathrasils和zeosils


2楼2012-07-12 18:14:11
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖
相关版块跳转 我要订阅楼主 dtmagp 的主题更新
信息提示
请填处理意见