矩

The values of total electron energy and dipole moment of a single water molecule calculated are both consistent with experimental results quite well.

该原理应用于水分子，计算得到的总电子能量和电偶极矩值都与实验符合得很好。

This interaction causes the dipole moment of the cluster to be dependent upon the spatial arrangement and relative permittivity of the particles and upon the cluster size.

这致使簇的感应偶极矩与簇的几何结构，大小以及颗粒的介电常数等参量有关。

So it avoids the distortion of electric cloud distribution in basis sets and can obtain a more precise computational result of the electric dipole moment of a given system.

从而在基函数中避免了电子云分布的歪曲，使得出的体系的电偶极矩更为精确。

Total electron energy and dipole moment of water molecular calculated are consistent with experiment quite well.

计算多粒子体系的电偶极矩时，根据最强化学键原理可采用有节面的精确类氢原子轨道为基函数，而不用径向光滑化的STO和GTO，因此不需作自洽计算。

In this thesis, two main parts are included, the first focuses on the characteristics of high-resolution spectra of free radicals in magnetic field, the second concentrates on the measurement of electric dipole moment of free radicals by Zeeman and Stark effects simultaneously.

本论文以电磁场中自由基分子的光谱与结构特性研究为中心，主要内容包括两部分，一是针对磁场中自由基分子高分辨光谱的特性研究，另一部分则是同时利用电磁场中自由基分子的Zeeman和Stark效应，对自由基分子的电偶极矩进行直接测量研究。

According to the Clausius-Mosotti-Debye equation,the dipole moment of the acetic ether is obtained to be 1.79D,which is close to the literature value.

根据Clausius-Mosotti-Debye方程，求出乙酸乙酯的偶极矩为1.79D，与文献值(1.78D)非常接近。

The results indicate that, in general, the critical temperature of the system becomes lower, compared with the 3D fluids, and is sensitive to the strength of the dipole moment, whereas the critical density shows an insignificant shift.

此外还考察了降低色散作用对系统汽液平衡性质的影响，发现降低色散作用会导致临界点下降，同时分子的偶极矩更加倾向处于分子所在的平面。

Meanwhile, the isomer with a larger change of dipole moment has larger value of the first hyperpolarizability during the charge-transfer process.

5， 6， 7顶点双取代碳硼烷桥连分子受推拉电子基的影响，5， 6， 7顶点碳硼烷的构型发生一定变化，碳硼烷中两个C原子间的距离变长；同时碳硼烷中两个C原子取代位置的不同，影响了分子的稳定性和极化率，取代基团与碳硼烷中成键数较低的C原子相连的异构体，稳定性较好且具有大的极化率； 5，6，7顶点双取代碳硼烷桥连分子形成一维结构有利于分子内电荷转移，在电荷转移过程中偶极矩变化较大的体系，其二阶NLO系数也较大。

Following the analysis, a new calculation model is developed, which takes the effect of the induced dipole moment of one atom on the polarizability into consideration, and the mathematical expressions are deduced in the cases of macro electric field parallel and perpendicular to the molecular axis, and at a random angle with the axis.

该模型考虑了分子内原子偶极矩对电子位移极化的影响，推导了宏观电场与分子轴平行、垂直、呈任意夹角等典型情况下的非对称双原子分子的电子位移极化率的数学模型。

The first moment is the mean of the distribution.

第一个矩是分配的平均数

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。