primary and secondary beam 主次梁
cross-shaped secondary beam 十字形次梁
primary and secondary beam nodes 主次梁节点
prestressed secondary beam 预应力次梁
primary and secondary beam transformation 主次梁转换
RC secondary beam 钢筋混凝土楼面次梁
secondary beam line 次级束流线
redundant secondary beam 超静定次梁
secondary beam technology 次级束流技术
The calculations show that the plan of two transversal and one longitudinal secondary beam planning is more reasonable.
综合分析表明，采用两横一纵的次梁布置方案较为合理。
Considering the restraining moment of the secondary beam, the paper deduces formulas for calculating torsional moment of edge beam of frame. Primary factors of affecting torsional moment are analyzed.
考虑次梁的约束作用，推导了框架边梁的扭矩计算公式，分析了影响扭矩大小的主要因素。
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