本文从分波分析入手，研究了氦原子诸双激发态内电子间的角关联，进而显示了这些态的几何特征。找出了K—量子数不同的态在分波结构上的差异，从而为K—分类规则提供了可靠的物理依据。

Electron-electron correlation in the doubly excited states of the helium atom has been investigated by partial wave analysis, thereby the geometric character of relevant states has been revealed.

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通过分析小波分解作为分形图像编码预分解的有效性和小波域内仿射变换的特性，提出一种基于分类的小波域内的分形图像编码方法。

With analyzing the availability of fractal image coding and the characters of affine transform in wavelet domain, a fractal image coding approach based on classifications is presented in this paper.

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谐波分析已经成为电力系统分析的一个十分重要的方面，用以研究电力系统规划和运行中与谐波有关的各种问题。

Harmonic analysis is very important to determine the harmonic level in the power system. It has become an important aspect of power system analysis and design.

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谐波分析已经成为电力系统分析的一个十分重要的方面，用以研究电力系统规划和运行中与谐波有关的各种问题。

Harmonic analysis is very important to determine the harmonic level in the power system. It has become an important aspect of power system analysis and design.

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