英文關鍵字
automated
automatic
bend
bender
bending
bends
billet
business
construction
cutting
engineering
equipment
factory
finished
hand
heavy
indoor
industrial
industry
iron
machine
machinery
man
manufacture
manufacturing
mechanic
metal
metalwork
metalworking
modern
person
pipe
pipes
plant
power
press
process
processing
production
professional
roller
rolling
shape
sheet
stainless
steel
system
takes
technology
tool
tube
work
worker
working
works
workshop