機器
assembly
craftsman
engineering
equipment
fabricate
fabrication
factory
fire
flash
gas
grind
hand
heat
hot
industrial
industry
iron
job
labor
light
man
manual
manufacture
manufacturing
mask
metal
protection
repair
safety
skill
skilled
smoke
spark
steel
structure
team
technical
technology
together
tool
trained
wear
weld
welder
welding
work
worker
workplace