英文關鍵字
spark
heat
sparkle
professional
welder
hold
portable
handheld
welding
machine
weld
male
try
hand
technology
exhibition
industrial
concept
use
iron
industry
safety
metal
equipment
occupation
factory
engineering
manufacture
repair
production
burn
electrode
worker
hot
bright
rod
light
detail
workplace
helium
tool
closeup
man