英文關鍵字
automated
background
building
business
close
construction
cutting
danger
detail
drill
engineering
equipment
factory
heavy
horizontal
indoor
industrial
industry
iron
lathe
machine
machinery
machining
man
manufacture
manufacturing
mechanic
mechanical
metal
metalwork
metalworking
milling
occupation
old
plant
precision
process
processing
production
sharpening
steel
technician
technology
tool
tooling
toolmaker
tools
turning
work
working
workshop