查询词典 covalency

Due to the larger spin-orbit coupling coefficient and covalency of the former.

此外，对于X=Br的情形，电荷转移机制的贡献明显大于X=Cl的情形，这与前者具有更大的旋轨耦合系数相一致。

It is believed that hydrogen bond in water is largely due to electrostatic forces and some amount of covalency.

一般被认为水的氢键主要是由静电力及一些电价性所导致的。

The electronic density of states revealed the covalency properties mainly resulted from the overlapping of O 2p and Si 3p band.

基于电子态密度计算和分析，表明这两种硅酸盐的基态性质主要由O 2p轨道电子的分布决定。

The calculated results of present work show better agreement than those of the previous studies with the observed values. It can be found that the contributions to the EPR parameters from the ligand orbitals and spin-orbit coupling interactions cannot be neglected for the systems with significant covalency.

理论结果与实验符合得很好，且比前人的计算，尤其是g和A有明显的改进，说明对这类共价性较强的体系，配体轨道和旋轨耦合作用的贡献不能忽略。

This model is also extended to predict the structural changes in nc-GaN with different covalency from BaTiO3, which promises the universality of this model in covalent-ionic nanocrystals.

说明了该模型在共价-离子晶体纳米材料体系中的普适性。

In terms of the obtained values of parameters, it is demonstrated that the covalency of the bonding between Mn〓 and ligands in SrTiO〓: Mn〓 is stronger than the one of the bonding between Cr〓 and ligands in SrTiO〓: Cr〓.

通过分析得到的常压参量值，揭示了在SrTiO〓：Mn〓中Mn〓与配位体之间的共价作用比SrTiO〓：Cr〓中Cr〓与配位体之间的共价作用更强。

The covalency for each bond obeys the following order:La-O＜Al(5)-O＜Al(1)-O＜Al(4)-O＜Al(2)-O＜Al(3)-O＜M-O.

晶体中各格位共价次序为：La-O＜Al(5)-O＜Al(1)-O＜Al(4)-O＜Al(2)-O＜Al(3)-O＜M-O。

These indicate that the covalency of bond that Nd〓 forms increases and the symmetry around Nd〓 lowers, which reflects the structural variations of silica gels.

这些表明了随着温度升高样品中Nd〓形成键的共价性增加，而且Nd〓周围的对称性降低，反映了硅胶结构的变化。

We note from the further studies that in the crystals, which sharing the similar crystal structures and coordinational environments, the magnitude of the Stokes shift of the luminescence of the dopant ion is in line with the average covalency of the replaced lattice site. This is because that the nature of Stokes shift is the energy transfer from the luminescent ion to the host lattice. The value of this energy is determined by the frequency of the host lattice in which the frequency is controlled by the chemical bond characters.

更深入的研究发现，在晶体结构和中心离子配位环境非常相似的系列晶体中，掺杂离子发射光的Stokes位移值与其所取代格位的平均共价性成正比的关系，这是由于Stokes位移的本质是发光离子在发光过程中向基质以光波辐射的形式传递能量，这一能量的大小是由基质的振动频率决定的，而基质的化学键性质恰恰决定着基质的振动频率。

According to the empirical rules of influence of the chemical bond on spectrum, electron spectroscopy and Mossbauer spectroscopy, the chemical environmental factor was further defined with the covalency and polarizability of a bond.

根据光谱、电子能谱和穆斯堡尔谱学中化学键对谱线影响的经验规律，进一步利用共价性和极化率定义了化学环境因子这一概念，并发现它能够有效地描述波谱学中化学位移的变化趋势。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。