查询词典 tetrahedrally

XRD and IR spectra studies showed that the product consists mainly of non-crystal and PO is built up tetrahedrally.

IR光谱分析产品中的磷酸根离子局部对称性为正四面体结构。

Al-MAS NMR spectra show that most of the aluminium ions are tetrahedrally coordinated before or after calcination.

AlMAS NMR谱研究表明，焙烧前后的样品，铝均为四配位环境，交换为氢型后有少量脱铝现象。

It was found that the tetrahedrally coordinated Ti in the titanosilicate molecular sieve was the main reason to arise H2O2 decomposition as well as the effect of acid centers of the catalyst.

结果表明，分子筛骨架Ti和其拥有的酸性位是造成H2O2在分子筛上分解的主要原因，非骨架Ti对H2O2分解的影响弱于骨架Ti.H2O2的无效分解直接影响反应物的转化效率。

ESR and UV-vis spectroscopic investigations suggested that the tetrahedrally coordinated iron and vanadium species incorporated within the silica framework.

ESR、紫外可见光谱结果表明铁和钒以高度分散的四配位状态存在于分子筛的骨架中。

FT-IR and UV-vis spectra indicated the existence of tetrahedrally coordinated Ti atoms, which may act as active sites for epoxidation of olefin.

FT-IR和UV-vis结果说明该沸石骨架在存在四配位钛，从而有可能成为催化烯烃环氧化反应的活性中心。

Diffuse-reflectance UV-visible spectroscopy and Raman spectroscopy analysis show that bismuth atoms in Bi-SBA-15 exist in a highly dispersed state, and locate mainly at tetrahedrally coordinated sites.

此外，为了考察进入分子筛中的铋原子的分布，对所合成的样品进行了XPS表征。

Films are obtained via dip-coating process. The results show that the isolated and tetrahedrally coordinated Ti(superscript 4+) which formed Ti-O-Si bondon the pore inner surface of the framework.

实验结果表明，多孔薄膜中的钛离子形成了Si-O-Ti键的孤立四配位形态，使薄膜具有复合型钛离子的催化效果，并且有介孔结构。

The second type of motif,the zinc finger,consists of a peptide loop with either two cysteines and two histidines or four cysteines at the base of the loop that tetrahedrally co-ordinate a zinc ion.

另一种基序称为锌指，由一个肽环构成，在肽环底部是两个半胱氨酸和两个组氨酸或四个半胱氨酸，与锌离子配位形成面体。

The unusual feature of thiscompound can also be described in terms of infinite chains of B3O3 six-memberedrings sharing B atoms, which are all tetrahedrally coordinated by oxygen atoms.

例如，一维螺旋链结构的铀-有机配位聚合物[U3O732]-·H3O+，它的结构中存在由 U3O 构成的螺旋铀氧带。它也表现类似的铀酰发光。

Tetrahedrally coordinated iron in framework-substituted microporous AlPO-5 catalysts are shown to be active and selective for the hydroxylation of benzene to phenol, using nitrous oxide as the oxidant.

四面体配铁架构取代硅微孔-5催化剂载有选择性的活跃和苯羟化苯酚、使用笑气作为氧化剂。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了