英文關鍵字
automotive
bright
casting
composition
dangerous
engineering
equipment
factory
ferrous
formation
founder
foundry
furnace
glowing
hard
heat
heavy
high
hot
industry
iron
light
liquid
machinery
manufacturing
melt
melting
metal
metallurgical
metallurgy
metalworking
modern
molten
part
plant
pouring
process
product
production
spilling
steel
technology
temperature
workshop