| 摘要 |
An adjustable structure (1) comprising a first structural layer (10) defined by a first array of extendable and/or retractable rods or beams (11, 11a, 11b) pivotally connected to each other at their ends and a second structural layer (20) connected to the first structural layer (10) and defined by a second array of extendable and/or retractable rods or beams (21, 21a, 21b) pivotally connected to each other at their ends, wherein at least a portion of the second layer (20) is outside the volume defined by the first structural layer (10) and the extendable and/or retractable rods or beams in the second arrayare more densely packed than the extendable and/or retractable rods or beams in the first array. |
