機器
arc
bright
cable
construction
current
dark
electric
electrode
energy
engineering
equipment
exterior
forged
gloves
hand
heat
helmet
hot
industrial
industry
inverter
iron
job
laborer
light
man
manufacturing
mask
mass
metal
metalwork
outside
power
protection
safety
skill
smoke
spark
steel
technology
tool
weld
welder
welding
welding device
work
worker