機器
business
change
company
construction
craftsman
engineering
equipment
fabricate
facilities
factory
fire
flash
glove
glow
grinder
hand
heat
industrial
industry
iron
job
light
manufacturing
mask
metal
metalwork
occupation
office
production
protection
repairing
safety
shop
skilled
smoke
spark
sparkle
steel
team
technology
tool
welder
welding
work
worker
working