Ⅱcross-section main girder
deflection-to-span ratio of main girder
distribution main [water supply]
double-ribbed main girder
internal distribution main
internal distribution main [water]
length of main girder without cables on the midspan
length of main girder without cables on the side of tower
main distribution frame room
main girder construction
Main girder cross-section
main girder of bridge crane
main girder of overhead travelling crane