然后pml距离光源的位置不同透过率差距也挺大，如下图，第一个图的光源距离pml是0.5um，第二个是1.1um，透过率差别挺大，那这个距离具体应该是怎么设置呢
We have an exciting announcement about badges coming in May 2025. Until then, we will temporarily stop issuing new badges for course completions and certifications. However, all completions will be recorded and fulfilled after May 2025.
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