機器
activity
backhoe
blade
boring
bucket
building
bulldozer
concrete
construct
construction
construction site
digging
dumper truck
earthmover
engineer
engineering
equipment
excavation
excavator
gravel
heavyduty
highway construction
hydraulic
industrial
industry
loading
machinery
manufacturing
mining
mover
moving
openpit
ore
process
quarry
quarrying
rocks
sand quarry
scoop
technology
tractor
transport
transportation works
under construction
unloading
vehicle
wheel loader
work
working
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