光学模型是在核数据计算和评价中所使用的最重要的理论之一。
The optical model is one of the most important theories in nuclear data calculations and evaluations.
于是选择和调整光学模型势参数成为核数据计算的关键步骤。
Thus, choosing and adjusting the optical potential parameters are the crucial steps in nuclear data calculations.
结果表明：这两种模型是定性解释活动星系核光学波段光变的合理模型。
The results show that these two models can qualitatively explain the AGN variability in the optical band.
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