Each linear light source unit is displaced on the rotating body or moving body to alternately project images with each other.
各线性发光单元放置在旋转体或运动体上以相互交替地投射图像。
Each linear light source unit is displaced on the rotating body or moving body to alternately project images with each other.
各线性发光单元放置在旋转体或运动体上以相互交替地投射图像。
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