機器
background
bench
building
business
checkup
closeup
dirty
engine
engineer
engineering
equipment
factory
gears
heavy
industrial
industry
interior
iron
job
lathe
machinery
maintenance
manufacture
manufacturing
mechanic
mechanism
metal
metallic
milling
nobody
old
oldfashioned
plant
power
processing
production
retro
room
stainless
steel
technology
tool
training
turning
vintage
wheel
work
workshop
worn