機器
aggregate
architectural
architecture
bridge
build
building
business
cage
construction
crane
engineering
equipment
ferroconcrete
form
foundation
hard
heavy
industrial
industry
iron
job
labor
machinery
material
mesh
metal
new
outdoor
piers
pile
rack
rebar
reconstruction
reinforcement
site
skeleton
sky
steel
strength
structure
support
technology
transport
truck
unfinished
welding
work
workers