機器
adult
apprentice
background
blue
business
close
closeup
cnc
color
design
detail
direction
drilling
engine
engineering
equipment
factory
gear
gears
head
historic
historical
industrial
industry
levers
lifting
line
loading
machinery
machining
manufacture
mechanical
metal
milling
old
part
person
technology
tool
transfer
universal
wheels
wheelscircuit
work