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We introduce the principle and arithmetic of Finite Difference Time Domain method particularly, and primarily discuss on several essential questions including excitation sources, the conditions of stability of calculation, and Perfectly Matched Layer boundary conditions. All of these factors have effect on the results of the numerical simulation.

2详细介绍了有限时域差分法(Finite Difference Time Domain， FDTD)的原理和算法，着重讨论和分析了激励源设置、FDTD法的稳定条件、PML吸收边界条件等几个关键问题，这些因素会直接影响模拟结果。

Then, the sequence voltages of the slack bus is replaced, and finding the positive sequence power flow several times until convergence comes off. Compared with the three-phase Newton-Raphson method, the Jacobian matrix with the proposed algorithm is of much lower order. The computation of finding the negative sequence component from the coupling power is only division arithmetic.

本文算法中修正方程式的雅可比矩阵阶数同单相潮流算法相同，是传统三相潮流算法的1/3，而通过耦合功率求解负序分量的计算，仅仅是简单的除法运算，计算量远远小于高阶矩阵的处理，因而总体上，与传统方法相比，大大降低了计算量。

Arithmetic progression: a number of its change in the process, after each change in the amount of change several times before, that is the product of the relationship.

算术级数：一个数量在其变化的过程中，每一次变化后的量是变化前的若干倍，也就是乘积的关系。

This paper intends to apply three mathematic progressions, namely arithmetic progression, Fibonacci progression and geometric progression to arrange the numbers into several groups by certain rules.

本文用三个数学级数即算术级数、斐波那契级数、几何级数，按一定的规则排列成一组数，根据每一组数的排列关系，反映人类资源供给与需求增长的级数关系。

While there are several network structures, the value of network increases arithmetically, geometrically or exponentially with its size.

网络结构可以分为多种，网络的价值可分别以算术级数、几何级数和指数等形式递增。

Introduce the several technology of data mining, compare two data mining arithmetics and propose some problem that should be resolved.

介绍了数据挖掘的几种技术，比较了两种数据挖掘的检测算法，提出了检测算法需要解决的问题。

Some recent methods of parameters' optimization are analyzed, and several characteristics of efficient arithmetics to optimize parameters of support vector machine are generalized.

首先介绍最近出现的参数优化方法，概括了高效率的参数优化算法应具备的若干特点。

The place of worship is the gurdwara, the chief example being the Harimandir, which was founded by Guru Arjun, several times destroyed, and finally rebuilt by Ranjit Singh.

崇拜的场所就称为谒师所，典型范例是哈里曼迪尔，由古鲁阿尔琼建立，曾经几次被毁，最后由兰吉特·辛格重建。

Several years ago, my friend Arlene and her husband were invited to dinner by her husband's employer.

可知，作者的朋友和她的丈夫被朋友丈夫的老板邀请吃饭，当然老板是"主人"，所以选A。

In Hebrew the term is Harmageddon and is known as Armageddon in several versions of the Bible.

希伯来一词harmageddon被称为最恶劣的，在几个不同版本的圣经。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。