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Brief description of embodiments of the optical effect by materials planes openwork or perforated
Brief description of embodiments of the optical effect by materials planes openwork or perforated
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机译:通过材料平面镂空或穿孔的光学效果的实施例的简要说明
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摘要
At least two perforated materials called screens (4) are used. These screens are juxtaposed at a distance from each other, at least one of said screens being shaped.
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