機器
activity
asphalt
backhoe
bucket
build
bulldozer
civil
concrete
construction
crawler
crawler excavator
development
dig
digger
dirt
earth
earthmoving
engineering
equipment
excavation
excavator
gravel
ground
heavy
heavy duty
high speed
highway
hydraulic
hydraulics
industrial
industry
loader
machinery
mover
repair
road
sand
scoop
shovel
site
soil
stone
tractor
transport
unloading
vehicle
work
worker
yellow