機器
activity
asphalt
blacktopping
building
compaction
compactor
concrete
construct
construction
construction site
contractor
dirt
earth
engine
engineer
equipment
floor
gravel
ground
hard
heavy
highway
industrial
industry
lane
loader
machinery
maintenance
pavement
paving
pressure
renewal
renovation
repair
road
roadwork
roll
roller
soil
soil compaction
soil compactor
steamroller
steel
transportation
vehicle
wheel
work
yellow