For the relatively smaller loads, the economical height-to-span ratio scopes of space steel trusses and space prestressed steel trusses can be found.
对于相对较小的荷载，可以找到立体钢桁架及立体预应力钢桁架的经济高跨比范围。
By study of large amount of computational results, the optimal heights of space steel trusses and space prestressed steel trusses of several spans are got.
通过对大量计算结果的研究，得出了几种跨度下立体钢桁架及立体预应力钢桁架的最优高度。
By study of large amount of computational results, the optimal heights of space steel trusses and space prestressed steel trusses of several spans are got.
通过对大量计算结果的研究，得出了几种跨度下立体钢桁架及立体预应力钢桁架的最优高度。
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