A理论

文中采用数字滤波方法绘制的Ra理论曲线，证明所推导的数学模型是正确的。

It is also demonstrated that the mathematic models drawing R α - curves using the digital filter method are correct .

综合起来，本文的研究内容和研究成果，主要包含两个方面，即：a、理论部分的研究和结论：b、开发辅助分析软件。

The main content and the research achievement of this paper include two parts , one is the results of theoretical investigations , and the other is to develop the computer aided analysis software .

根据自由电子气模型，提出了一种用于计算原子激发态能级的X＿a交换参数的理论模型。

Based on the free-election-gas model , a theoretically determined X_a exchange parameter method which is suitable for calculating excited state energies was presented .

基于二阶矩定义，对表征半导体激光光束质量和像散特性的光束特征参数M2因子和内禀像散不变量a等作了理论推导和分析。

Based on the second-order moments , the M 2 factor and the intrinsic astigmatism of the beam from a semiconductor laser are derived and analyzed theoretically .

文章还对激励段最佳γa值提供了理论计算的依据。

The paper also provides the theory and calculation data of the optimum γ a for the driving section .