By use of numerical approximation method, the paper USES the polynomial to approach segmentally the transient electric field from dipole dipole array.

本文采用数值逼近的方法，逐段用多项式表示偶极—偶极排列的瞬变电场。

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The main research works and conclusions are as following:1. Optical properties of different shape metal nanoparticles are simulated by the discrete dipole approximation (DDA) method.

本论文的研究工作和成果如下：1。利用离散偶极子近似方法研究了不同形状纳米金属颗粒的光学性质；

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