機器
architect
builder
building
bulldozer
business
check
civil
coal
components
computer
concrete
construction
control
delivery
drawing
engineer
equipment
excavator
foreman
hardhat
helmet
hose
hydraulic
industrial
industry
inspector
job
man
manager
miner
mining
online
people
plan
profession
professional
protection
safety
site
steel
storage
system
tablet
tractor
truck
tunnel
warehouse
work
worker