機器
action
aiming
builder
casting
cement
compacting
concrete
concrete mixer
concreting
construction
constructor
contractor
equipment
filling
fluid
formwork
foundation
fresh
grid
industrial
industry
liquid
machinery
master
mesh
metal
mixer
operation
people
pipe
pour
reinforcement
residential
shovel
site
steel
support
tool
tube
vibration
water
worker
workman
workshop