機器
arc
assembly
construction
engineering
equipment
fabricate
factory
flash
gloves
hot
industrial
industry
iron
ironworks
job
labor
laborer
laboring
labourer
light
man
manual
manufacture
manufacturing
mask
metal
metalwork
production
protection
protective
repair
safety
skill
skilled
smoke
spark
steel
structure
technical
tool
weld
welded
welder
welding
work
worker
workman
workplace
workshop