機器
accuracy
bore
build
closeup
cooling oil
device
drill
drilling
engineer
engineering
equipment
factory
gear
grind
grinding
heavy
high
ind
industry
jewelry precision gears
machinery
machining
manufacture
manufacturing
mechanical
metal
metallic
metalwork
operate
power
process
production
professional
stainless
station
steel
tech
technological
technology
thread
threading
tool
turning
watch factory
watches
work
workshop