在钢箱梁中创造了一张树床。
椽:支撑起一个斜屋顶的斜梁中的一根。
Rafter: One of the sloping beams that supports a pitched roof.
重点讨论了预应力连续梁中次弯矩和轴向预压力对弯矩调幅的影响。
The emphasis of the paper is placed on the influence of the secondary moment and the axial prestress on the moment redistribution.
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