| 摘要 |
A cast sheet that consists of a non planar net structure with cavities, where the net structure spread across a plane and where the cavities can form holes from one side of the sheet to the other. The cavities on both of the sides of the sheet can be arranged in identical structures where the structure of both sides are displaced or rotated in relation to each-other. Also described is a form template for casting of such a sheet and a method for producing such sheet.
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