英文關鍵字
1080
1080p
1920
aluminium
closeup
cnc
controls
cutting
drill
engineering
equipment
factory
heavy
industrial
industry
instrument
iron
lathe
machine
machinery
machining
manufacture
manufacturing
mechanic
mechanical
metal
metalwork
mill
milling
power
precision
processing
production
skill
stainless
steel
technology
tool
turning
work
worker
workshop