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