機器
action
activity
architecture
bars
builder
building
casting
cement
compacting
concrete
concreting
construction
contractor
craftsman
development
engineering
equipment
filling
floor
form
foundation
house
industrial
industry
infrastructure
iron
liquid
man
mesh
metal
mixer
mortar
operation
pipe
pouring
process
pump
rebar
reinforced
reinforcement
reinforcing
site
steel
tube
work
worker
working