查询词典 inversion point

And by using IM, the RCS of a dielectric plate and array antennas of dielectric cylinders guiding electromagmetic field with finite length are calculated. IM method gets rid of the inversion of a large matrix and its solution can be fast convergent, so it is simple and especially fit for solving the problems with which the high-frequencies and the low-frequencies deal difficultly.

本文所作主要工作及贡献如下：（1）在考虑馈源匹配良好的状况下，用各种高频近似法对卡塞格伦天线、二维与三维反射面天线的电磁散射与RCS进行了全面地分析计算，并对旋转反射器表面形状进行了低RCS外形优化设计。

Finally, the methods are applied to the inversion of electromagnetic wave log in oil field.

最后，将方法应用于石油领域的电磁波测井解释反演问题中。

Elementary transformation, matrix inversion using a written calculation method...

初等变换法，矩阵求逆用的是笔算时惯用的方法，需要高斯消去法的朋友请参看有关资料。

Through Gaussian elimination method for computing matrix inversion, the project has a strong practical value.

通过高斯消去法，进行矩阵求逆运算，在工程中有很强的实用价值。

In said method no additives such as disperser and emulgent are used, thus the obtained polymer is relativly pure, the inversion rate of polymerization is high and the post treatment is simple.

在这种聚合方法中，不使用分散剂、乳化剂之类的助剂，这样得到的聚合物比较纯净，而且聚合转化率高，后处理也简单。

In this paper, the basic theory and recent progress of emulsion phase inversion are summarized in detail.

本文总结了乳状液转相的基本理论和近年来的研究进展。

Using 3-channel bipolar ECG signals simultaneously recorded from different positions of ventricular epicardium, the inversion of VF dynamical model is explored.

利用从心室肌表面不同位置同时记录到的三通道双极性电信号反演VF动力学模型。

This dissertation studies the applications of the inversion techniques and its equivalent form in finding and proving the hypergeo...

本文探讨了反演技术及其等价的形式在寻求和证明超几何级数恒等式方面的应用。

This dissertation studies the applications of the inversion techniques and its equivalent form in finding and proving the hypergeometric series identities.

本文探讨了反演技术及其等价的形式在寻求和证明超几何级数恒等式方面的应用。

By use of the ergodic property of chaos movement and the inversion of genetic algorithm, a chaos genetic algorithm was proposed. Its basic principle lies in the small disturbance of which extent is adjusted during searching to child generation group using the chaos variable.

摘 要：利用混沌优化的遍历性和遗传算法优化的反演性，提出了混沌遗传算法，其基本思想是把混沌变量加载于遗传算法的变量群体中，利用混沌变量对子代群体进行微小扰动，随着搜索过程的进行逐渐调整扰动幅度。

So it was last week in Selma , alabama.

上星期在亚拉巴马州塞尔马市发生的事件也是这样一个转折点。

The group also spearheads various social programs in China.

该组织还带头参与中国的各种社会活动。