英文關鍵字
automated
closeup
cnc
cut
cutter
cutting
engineering
equipment
factory
heavy
industrial
industry
instrument
iron
lathe
lathing
machine
machinery
machining
manufacture
manufacturing
material
mechanical
metal
metalwork
metalworking
milling
modern
operation
part
plant
precision
process
processing
production
rough
shaving
spark
sparks
steel
technology
tool
turning
work
working
workshop