機器
activity
blade
bucket
building
bulldozer
construction
cut
development
dig
digger
drill
drilling
earth
engineering
equipment
excavate
excavating
excavation
excavator
ground
heavy
hydraulic
industrial
industry
large
load
loader
machinery
man
mining
motor
mover
oil
piles
pit
power
powerful
sand
scoop
shovel
silhouette
site
soil
track
tractor
vehicle
work