機器
business
change
channel
close
company
construction
design
engaged
engineering
equipment
facilities
factory
fire
flash
glove
glow
gondola
grinder
hand
hot
industry
iron
job
man
manufacturing
mask
metal
office
production
protection
repair
safety
shift
shop
skill
smoke
spark
sparkle
steel
team
technical
technology
tool
welder
welding
welding electric
wizard
work
worker