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This structure can decrease spherical aberration coefficients, and improve the convergence of three beams without deteriorating of the focusing performance.

分析表明这种结构减小了透镜像差，并且解决了缩小束间距引起的球差系数和放大率上升的问题。

The effects of theFresnel number, spherical aberration coefficients and the beam orders on the beamquality were discussed in detail.

详细讨论了透镜系统的菲涅尔数、透镜球差系数以及光束阶数等参数对光束质量的影响。

Expanding the modification model in vector spherical harmonics, we obtained the absorption and scattering coefficients of the beam wave case.

将所得的修正解按矢量球面波函数展开，就球形粒子对束状波的消光系数进行推演和计算，并与平面波Mei理论和国外的实验结果进行比较，验证了修正解的正确性。

Based on the research on the scattering of the Gaussian beam from single sphere, the intensity distributions of LGB beam in different propagation distance is analyzed. Without considering the relationship of scattering and phase shift, the beam coefficients is gained by the solution of scattering cross section, and the LGB is expanded in terms of the vector spherical harmonics as fundamental Gaussian beam. The scattering of the beam with orbital angular momentum from single sphere located on the propagation axis is studied.

在单体球粒子对高斯光束散射研究的基础上，分析了在自由空间不同传输距离LGB光束的光强分布情况，在不考虑散射和波束相移关系的情况下，将LGB作为入射高斯光束，通过对波束入射时的散射衰减截面求解得到波束因子，利用矢量球谐函数对入射高斯波束进行展开，从而研究了单球粒子在在轴条件下对具轨道角动量高斯波束入射的散射问题。

For the diffusion coefficients of electrolytes in aqueous solution by the mean spherical approximation was modified in two ways.

采用两种方法对Barnard等的用平均球近似理论计算电解质在水溶液中的扩散系数的方法进行了改进。

In Chapter 4,we prove the existence of global weak solutions to the compressible NSP equations with density-dependent viscosity coefficients when the initial data are large and spherically symmetric by constructing suitable aproximate solutions.

在第四章里，对于粘性系数依赖于密度的等熵可压缩NSP方程，在R~3中包含球心的球状区域内，我们得到了大始值的，球对称弱解的整体存在性。

However, the directly path coefficients of spikelet opening time is minus.

而开花历时的直接通径系数呈现负值。

Li_2O-Al_2O_3-SiO_2 System low thermal expansion porcelains based on spodumene were stud- ied systematically to obtain the ceramic bodies with the thermal coefficients lower than 2×10~(-6)/℃(20~800q℃) near zero expansion.

本文系统地研究了以锂辉石为基础的Li_2O-Al_2O_3-SiO_2体系低热膨胀陶瓷，获得了热膨胀系数小于2×10~(-6)/℃以及接近于零膨胀的陶瓷坯体。

The resolution kernel and the root square deviation of the inversion solution can be obtained by analyzing the spherical harmonic coefficients.

在变换后的球面域上用球谐函数来拟合速度函数，达到降低球谐系数阶数的目的。

For further study to improve performance, an adaptive control algorithm based on Neural Network is tried in stabilization control. A new method of selecting the initial weights of Neural Network is put forward, which is that the coefficients of discrete equivalent of continuous transfer function in traditional control are used as the initial weights of Neural Network. Adaptive Neural Network control is combined with traditional control by using different method in different segment.

作为进一步提高稳定系统性能的探讨，对基于神经网络的参数自适应调整控制方法在稳定控制中的应用进行了研究，提出了将传统校正方法经离散化后所得到的数字控制算法的系数作为神经网络权值初值的新方法，并采用分段控制，将传统校正方法和神经网络控制方法相结合，取得了较好的控制效果。

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里，举止就文雅一些，因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计，这件高贵的制服是香港本土制造，是我们第一套不配帽子的制服。