機器
activity
asphalt
asphalting
blacktopping
building
bulldozer
compactor
concrete
construction
digger
earth
engineering
equipment
excavator
heavy
highway
hydraulic
industrial
industry
loader
machinery
maintenance
metal
pave
pavement
paver
paving
pressure
repair
road
roadworks
roller
sand
site
soil
steam
steamroller
street
tractor
transport
transportation
truck
vehicle
vibration
wheel
work
worker
yellow