| 摘要 |
Base mouldings useful to form shadow boxes from a multitude of commonly-available decorative frame parts comprise three-dimensional lengths of wood or the like provided with an eight-sided, right-angled cross-section comprising a top side, a bottom side, a left side, a right side, an upper two-sided rabbet between the top side and the right side and a lower two-sided rabbet between the bottom side and the right side.
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