機器
activity
aggregate
architecture
beton
building
cement
cement mixer
concrete
concrete mixer
construction
development
dirty
equipment
flooring
foundation
gravel
gray
house
industrial
industry
infrastructure
job
labor
manufacturing
material
metal
mixer
mixing
mortar
occupation
old
outdoor
pouring
preparation
process
reconstruction
reinforcement
repair
rotation
sand
site
steel
structure
technology
tool
unfinished
wet
work
worker