英文關鍵字
alloys
burning
cast
casting
construction
donbass
electric
equipment
factory
fire
flame
flow
form
foundry
furnace
glow
heat
heavy
hot
indoors
industrial
industry
interior
iron
ladle
liquid
machine
manufacturing
measurement
melt
metal
metallurgical
metallurgist
metallurgy
mill
molten
plant
pour
pouring
red
smoke
sparks
steel
storage
tank
work
workers
workshop
yellow