英文關鍵字
background
black
bright
bronze
business
cast
casting
cup
equipment
factory
ferrous
fire
form
forms
founding
foundry
furnace
glow
glowing
gold
heat
heavy
hot
industrial
industry
iron
light
liquid
manufacturing
material
melt
melting
metal
metallurgical
metallurgy
metals
mill
mold
molds
molten
nonferrous
orange
plant
pour
power
production
red
shop
smelt
smoke
spark
steel
technology
work
workshop