機器
architect
balanced cantilever
beam
beam launcher
bridge
building
building contractor
cantilever
cement
concrete
construction
crane
development
engineering
equipment
expressway
ferroconcrete
framework
girder
heavy workers
helmet
hydraulic
industry
innovation
iron
labors
launching girder
launching truss
machinery
materials
overpass
prestressed concrete post tension
reinforced concrete
reinforcement
safety
scaffolding
segmental box girder
span by span
specialized
stage
steel
steel bar
structure
super structure
truss
wall
work
working
workplace