英文關鍵字
automatic
blade
circle
closeup
engine
engineering
equipment
factory
industrial
industry
iron
lathe
machine
manufacturing
material
metal
metallic
motion
old
retro
sliding
spinning
steel
technology
turning
working
workpiec
英文關鍵字
automatic
blade
circle
closeup
engine
engineering
equipment
factory
industrial
industry
iron
lathe
machine
manufacturing
material
metal
metallic
motion
old
retro
sliding
spinning
steel
technology
turning
working
workpiec