英文關鍵字
arc
automated
automation
bender
bending
cnc
curve
engineering
equipment
factory
folding
forming
industrial
industry
iron
ironwork
machine
machinery
making
manufacture
manufacturing
material
mechanic
mechanical
metal
metalwork
metalworking
operation
pipe
pressure
processing
production
roll
roller
sheet
steel
technician
technology
tool
tube
work
worker
workshop