A theoretical model of CO2 laser cutting non-metal materials is built up based on energy balance equation in view of gauss beam distribution.

基于能量平衡方程，考虑高斯光束分布，建立了CO2激光切割高吸收率非金属材料的解析模型。

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For this character, to use more fine double Gauss model to simulate the distribution and to use EM principle to get the corresponding model coefficients is a good idea.

针对这个特点，采用更为细致的双高斯模型来模拟这种分布，并且使用EM算法来获得相应的模型参数。

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