機器
assembly
building
business
change
channel
company
construction
electrode
engaged
engineering
enterprise
equipment
facilities
factory
fire
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glow
gondola
grinder
hand
helmet
industry
iron
job
join
labor
manufacturing
mask
metal
metaldesign
mig
occupation
office
plant
protection
repairing
safety
skill
solder
soldering
steel
team
technology
tig
torch
welder
welding
work
worker