電極
arc
black
cloth
construction
electric
engineer
equipment
fabrication
gas
glove
goggle
icon
illustration
industrial
industry
isolated
label
laborer
line
male
man
mask
metal
outline
pipe
piping
plate
pliers
repair
rod
safety
sign
spark
sparkle
steel
symbol
thin
tool
torch
visor
weld
welded
welder
welding
work
worker