英文關鍵字
accuracy
automated
background
business
construction
cutter
cutting
detail
engineering
equipment
factory
hand
hard
heavy
industrial
industry
instrument
iron
lathe
lumber
machine
machinery
machining
man
manufacture
manufacturing
material
mechanic
mechanical
metal
metalwork
metalworking
mill
milling
precision
process
processing
production
professional
sawdust
skill
steel
technology
tool
turning
work
worker
working
workpiece
workshop