硅氧四面体

虽然硅氧四面体依然作为各体系的基本单位而存在，但彼此间的连接方式已发生变化，原本的长链结构发生变形、扭转甚至断裂，有序层状结构逐渐变得混乱无序。

Although silica tetrahedron still exists as the basic unit , the connecting way between each other has changed a lot . The long chains already twist , rotate and even rupture , and the former layered structure becomes disordered .

核磁共振谱是管道水，镁八面体和硅氧四面体上的OH引起的；

, and the NMR spectra by pipe water in fibre and OH on Mg-octahedra and Si-O tetrahedra .

研究指出：酸对蒙脱石晶体中的铝氧八面体破坏性强于硅氧四面体，导致残酸中硅/铝（Si／Al）元素重量比值比理论值低，酸蚀残余物中刚好相反。

It is concluded the value of Si / Al in residual acid fluid is lower and Si / Al value of the remaining smectite is higher than the theoretical prediction because alumina octahedral is more corroded by acids than silicon - oxygen tetrahedral .

其主要结构单元是硅氧四面体和铝氧八面体。

The main structure unit of clay minerals contains silicon-oxygen tetrahedron and aluminium-oxygen octahedron .

其甲基可能嵌入了硅氧四面体的六角环空洞中，而羟基嵌入了铝氧八面体内。

It was deduced that methyls were possibly inserted into hexagonal rings of silica tetrahedrons and hydroxyls into octahedrons .

叶蜡石是一种新型的层状硅酸盐工业矿物材料，它是由氧铝八面体和硅氧四面体组成。

Pyrophyllite is a kind of new industrial mineral of layered silicate which is consisted of Al-O octahedron and Si-O tetrahedron .

低钙粉煤灰中的微粒为硅氧四面体结构，自身的活性很低。

The particle in the fly ash of low calcium is the silicon oxygen tetrahedron structure , one 's own activation is very low .

蛇纹石是一种天然的由硅氧四面体晶片和氢氧镁八面体晶片结合而成的层状含镁硅酸盐矿物。

Serpentine minerals are typical Mg-rich layer silicate minerals , and they consist of a silicate tetrahedral sheet and a brucite-like magnesium octahedral sheet .

硅氧四面体对称伸缩振动区的主峰不对称以及展宽主要是由于一系列具有不同为环境下的二级结构的变化造成的。

The asymmetric and broadening of Raman ban around the main peak in symmetric stretching vibration region are mainly caused by the variant of secondary-structure in various microenvironments .

分析表明纤蛇纹石中氢氧镁石八面体层被酸溶蚀和硅氧四面体层的塌陷是导致这种白炭黑具有多孔纳米纤维结构的直接原因；

The results indicate that nano-fibriform silica is porous and that the nano-fibriform structure is attributed to the complete dissolution of the brucite octahedral sheets of chrysotile and the collapse of some Si-O tetrahedral sheets .

高岭石为硅氧四面体的六方网层与氢氧铝石按1：1的结合而形成的层状硅酸盐矿物。一水硬铝石表面的铝离子丰度是高岭石表面的铝离子丰度的1.7倍。

In the crystal lattice of kaolinite aluminium-oxygen and silicon-oxygen tetrahedron forms layer type silicate mineral at the ratio of 1: 1.Abundance of aluminium atom on the surface of diaspore is 1.7 times larger than that on the surface of kaolinite .

结果表明，不同二维结构单元体（包括硅氧四面体片、八面体片、层间域（物））的构筑基本符合球体紧密堆积原理，紧密堆积层平行{0001}；

The two-dimensional structural units ( such as silicon-oxygen tetrahedral sheet , octahedral sheet ), interlayer space ( or interlayer matter ) are assembled according to the sphere close packing manner , and the close packing layers parallel to { 0001 } .