四面体的

This structure took threefold-symmetric Bricard linkages,composed of six tetrahedrons,as fundament,and implemented retractability through tetrahedrons' rotation around the adjacent hinges.

这种结构以6个四面体构件形成的三向对称环形连杆机构为基础，通过四面体绕相邻铰转动实现结构的闭合和开启。

The basic process of tetrahedral octree spatial decomposition for using directly in finite element analysis is described.

然后在此基础上详细论述了正四面体八叉树法划分空间、直接生成四面体网络单元的基本过程。

There are also two types of IPTligands in crystal 2. With two bidentate carboxylates, one acts as bridging ligandconnecting neighboring 〓 tetrahedral core along c axia to form ladderlike long chain.

且间苯二甲酸根配体可以分为两类：第一类配体中每个羧酸根连接四核锌四面体结构中的四条边并沿c轴方向连接邻近的四面体结构单元形成梯形长链。

Results show that protons are liberated by dehydration or dehydroxylation after calcination at 500℃. These protons disrupt the silicon-oxygen-aluminium bridges where there are Al substitutions in the tetrahedral sheet of the montmorillonite. Some of silicon-oxygen and aluminum-oxygen tetrahedral invert to react with the pillaring agents and yield covalent bonds which firmly fix the pillars to the host clay. The Al-MMT are thermally and hydrothermally stable up to 700℃.

经过500℃高温焙烧后，交联剂经脱水或脱羟基释放出质子攻击蒙脱土四面体层中Si-O-Al四键，硅氧四面体和铝氧四面体发生翻转，与交联剂发生反应生成共价键，形成稳定的层柱黏土材料，在700℃高温下，Al-MMT材料不仅具有较好的热稳定性，而且具有较好的水热稳定性。

Upon the addition of CdS into the GeS2-Ga2S3 system, the number of the metal-metal bonds and edge-shared GaS4/2 tetrahedra decreases, resulting in the formation of corner-shared tetrahedra with non-bridging sulfurs.

随着CdS逐渐加入到GeS_2-Ga_2S_3玻璃中，金属-金属键和共边连接的GaS_(4／2)四面体逐渐减少，导致相应共角连接四面体和非桥硫的出现和增加。

Two of the oxygen atoms of each tetrahedron are shared with other tetrahedrons, forming a chain that is potentially infinite in length.

每个四面体都同其它四面体共享两个氧原子，形成一种可能为无限延伸的链。

Titanium silicalite molecular sieves are a type of heteroelements-containing molecular sieves which are comprised of Ti-0 tetrahedrons and S:-0 tetrahedrons.

钛硅分子筛是由钛氧四面体和硅氧四面体构成的一类杂原子分子筛，它是将钛引入全硅分子筛骨架的一种新型催化材料。

Inosilicate: Any of a class of inorganic compounds that have structures characterized by silicate tetrahedrons (a central silicon atom surrounded by four oxygen atoms at the corners of a tetrahedron) arranged in chains .

链状硅酸盐：旧称偏硅酸盐。由硅酸盐四面体(四面体角上的四个氧原子围绕着一个中心硅原子)排成链状结构的化合物。

Inosilicate: Any of a class of inorganic compounds that have structures characterize d by silicate tetrahedrons (a central silicon atom surrounded by four oxygen atoms at the corners of a tetrahedron) arranged in chains.

链状硅酸盐：旧称偏硅酸盐。由硅酸盐四面体(四面体角上的四个氧原子围绕着一个中心硅原子)排成链状结构的化合物。

Each tetrahedron shares two of its oxygens with neighboring tetrahedra.

每个四面体都有两个氧原子是与其相邻的两个四面体共用的。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。