英文關鍵字
accuracy
automated
automatic
automation
business
closeup
cut
cutter
cutting
detail
drill
engineering
equipment
factory
heavy
industrial
industry
instrument
iron
lathe
machine
machinery
machining
manufacture
manufacturing
mechanical
metal
metallic
metalwork
metalworking
mill
milling
modern
part
plant
power
process
processing
production
steel
technology
tool
turning
work
working
workshop