| 摘要 |
A framed metal tower has pyramidal or prismatic sections with belts, horizontal and inclined distance pieces, and connected to each other. Adjacent sections are directed one with respect to another through turn of section placed higher round vertical axis with respect to section placed lower. Connection of adjacent sections is performed through fixed attachment of base of upper sections to tops of lower sections. At that geometrical form of base of section placed higher is circumscribed to geometrical figure of the top of section placed lower.
|
