英文關鍵字
assembly
connect
construction
contractor
craft
craftsman
engineer
engineering
equipment
fabricate
fabrication
factory
flash
gas
helmet
industrial
industry
iron
job
labor
laborer
man
manual
manufacture
manufacturing
mask
metal
metalwork
occupation
plant
production
protection
protective
repair
safety
skill
skilled
spark
steel
technical
tool
torch
weld
welded
welder
welding
work
worker
working
workwear