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D4100反射光角度咨询

上传1位图片没有问题,但开和关两个级次反射的光束不在±12°的方向上,而是在镜面方射的方向。只有在运行结束后clear 和float会翻转到12°的方向,然后快速度

翻转到镜面反射的方向。请问是什么原因呢?(附录加载步骤)