英文關鍵字
bending
metal
sheet
closeup
steel
hydraulic
industry
matrica
production
die
punch
pushing
bend
machine
brake
manufacturing
factory
industrial
manufacture
part
process
punching
processing
metalworking
fabrication
automation
press
worker
workshop
safety
engineering
operator
automatic
engineer
machining
workplace
work
professional
manual
mechanic
tool
metalworker
technology
galvanized