英文關鍵字
welder
weld
production
industry
manufacture
steel
metal
iron
metalwork
craft
craftsman
metallurgy
workshop
instrument
job
detail
electrode
engineer
equipment
fabricate
fabrication
factory
flash
garage
gas
hard
heat
heavy
labor
laborer
labour
maintenance
manual
material
mechanic
mechanical
occupation
plant
process
profession
professional
repairer
repairman
safety
spark
tool
work
worker
workplace
workwear