機器
background
backhoe
bucket
bulldozer
business
carrier
coal
construction
contractor
crash
development
dig
digger
dredge
dredger
earth
earthmover
equipment
excavate
excavating
excavator
gravel
heavy
industrial
industry
loader
machinery
mine
minerals
mining
model
ore
outdoors
pit
power
quarry
rock
scoop
shovel
soil
special equipment
technology
tractor
transport
transportation
truck
vehicle
wheel
work