英文關鍵字
detail
electric
electrode
equipment
glove
hot
indoors
industrial
industry
iron
job
man
manufacturing
melt
metal
metalwork
person
professional
rod
sparkles
sparks
steel
technology
weld
welder
welding
work
worker
workman
英文關鍵字
detail
electric
electrode
equipment
glove
hot
indoors
industrial
industry
iron
job
man
manufacturing
melt
metal
metalwork
person
professional
rod
sparkles
sparks
steel
technology
weld
welder
welding
work
worker
workman