钢桁架两榀一组，采用对称钢桁架梁组合结构。
Two steel trusses are in a group, and symmetrical steel truss beam combination structure is adopted.
目前，这一工程中难度最大的钢结构主桁架梁成功卸载。
At present, the difficulty of the project's largest steel structure in the main truss beam successfully uninstalled.
轻钢龙骨体系就是由这样的平面桁架梁组成的结构体系。
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