英文關鍵字
aluminium
automated
background
black
business
cnc
construction
craft
craftsman
cutter
drill
drilling
electric
engineering
equipment
fabrication
factory
frame
housework
industrial
industry
iron
lathe
machine
machinery
machining
machinist
manual
manufactory
manufacturer
manufacturing
metal
milling
nobody
person
plastic
power
precision
production
programmable
protective
screwdriver
spray
steel
strength
technology
work
worker
workshop