機器
360
area
backfill
black
bucket
building
bulldozer
car
construction
diesel
dig
earth
engineering
excavated
excavator
factory
grader
heavy
hydraulic
industrial
industry
iron
jcb
labor
labour
land
machinery
mechanization
new
orange
pit
power
repair
scoop
scraper
service
site
snow
special
technology
tractor
trench
trenching
urban
vehicle
work
workplace