英文關鍵字
area
being
bench
blast
burning
car
carbon
coal
coke
cool
danger
dirt
discharge
dust
energy
environment
flame
furnace
heat
hot
industrial
industry
iron
machine
manufacture
outdoor
oven
plant
power
pushing
quenched
quenching
removing
safe
safety
smoke
station
strength
transfer
transported
transportred
water
work