under beam girder 梁下纵材 ; 梁下纵桁 ; 梁下纵梁
i beam girder 工字梁
T-beam girder 丁字梁
double beam girder-erecting machine 双梁式架桥机
single beam girder-erecting machine 单梁式架桥机
I-beam girder 工字钢梁
reinforced T-beam girder T型梁加固
The box type structure, cavity cannot antirust paint corrosion, in order to prevent moisture intrusion corrosion beam cavity, sealing the inner cavity of the main girder must keep.
箱型结构的主梁，内腔无法涂漆防锈蚀，为了防止水汽侵入腐蚀主梁内腔，必须保住主梁内腔的密封性。
Girder at one end of the support on the center column, the other end of the support beam on beam cars.
主梁的一端支撑在中心柱上，另一端支撑在端梁小车的端梁上。
Harbin sifangtai bridge is a cable-stayed bridge whose girder is composed by steel i-beam above and concrete deck slab below.
作为叠合梁斜拉桥，四方台大桥的主梁由下部的工字钢和上部的混凝土行车道板组合而成。
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