機器
background
blurred motion
bronze
chips
closeup
coolant
curling
cutting
detail
drill
drilling
engineer
engineering
equipment
facing
factory
garbage
gold
gradual rotating management
grease
heavy
industrial
industry
iron
lathe
machine item detail worker
mechanic
metal
metalworking
mill
milling
parts
processing
production
profession
ring
scrape
silver
sizing manufacturing
steel
stocking
technical
technology
tool
turner
turning
waste
white
work