英文關鍵字
abstract
casting
engineering
environment
equipment
extraction
factory
fire
flame
flow
furnace
heat
heavy
hot
industrial
industry
iron
ladle
liquid
machine
manufacturing
material
melting
metal
metallurgy
molten
orange
ore
planning
plant
pour
private
production
red
sector
smelting
sparkles
standards
steel
supply
technology
temperature
unit
work
yellow