| 摘要 |
The Christmas tree consists of a straightl rectangular plate as the base (1), the regular tetrahedral prismatic shells (2), which are attached to it, further of a straight band beams (3), the tops (10) and wings (4), which are attached either directly to the group of horizontal beams (3), or are attached to the other wing (4), located closer to the center line. Wing (4) consists of a straight branch (5), the vertical branches (6), attachments (7), the coupling (8) or ednding (11), or of oval cones (9). |
