In this paper a space analysis method for built-up system of arch trussed beam has been proposed.
针对拱桁梁组合体系桥梁，本文提出一种空间计算方法。
Deflection, the total tendency is under the similar load, along with the web plate high increase, the built-up beam rigidity is increasing, amount of deflection unceasing reducing.
对于挠度来说，总的趋势是在同样的荷载下，随着腹板高度的增加，组合梁的刚度在增加，挠度不断的降低。
A theoretical model of CO2 laser cutting non-metal materials is built up based on energy balance equation in view of gauss beam distribution.
基于能量平衡方程，考虑高斯光束分布，建立了CO2激光切割高吸收率非金属材料的解析模型。
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