英文關鍵字
abstract
background
boiler
burn
burner
business
conveyor
energy
equipment
factory
fire
flame
foundry
fuel
furnace
generating
generator
heat
heavy
hot
industrial
intensive
iron
light
liquid
machine
machinery
manufacturing
melt
melting
metal
mill
molten
multi
petrochemical
plant
pollute
pollution
power
process
produce
production
refine
refinery
rolling
screen
smelting
spark
spleet
steel
stove
technical
temperature
welding