機器
backhoe
bucket
building
bulldozer
construction
constructionmachinery
crawler
crushed
development
dig
digger
dredge
dredger
earth
earthmover
engineering
equipment
excavation
excavator
extracting
gravel
ground
heap
heavy
hydraulic
industrial
isolated
loader
machinery
manufacturing
material
mechanical
metal
mining
mover
navvy
orange
outdoors
pneumatic
power
quarry
rubble
scoop
shovel
soil
technology
tractor
vehicle
yellow