英文關鍵字
protective
glowing
steel
manual
skills
metal
plant
liquid
temperature
industrial
fabrication
production
trade
workers
footage
work
skilled
equipment
environment
mould
molten
clothing
safety
high
industry
machinery
pouring
labor
health
heavy
iron
occupational
casting
gear
raw
process
melt
metallurgy
manufacture
workshop
sparks
glow
refractory
flames
metalcasting
blast
incandescent
factory
manufacturing
crafting
craftsmanship
material
furnace
metalwork
steelwork
ingot
smelter
shaping
innovation
foundry
engineering
heat
alloys
steelmaking
forge
steelworks
ironwork
hot
smelting