英文關鍵字
blast
coal
coke
danger
detail
dirt
drive
dust
energy
environment
flame
furnace
guide
heat
hot
industrial
industry
iron
large
machine
manufacture
outdoor
oven
plant
power
pushing
removing
safe
safety
smoke
strength
work
英文關鍵字
blast
coal
coke
danger
detail
dirt
drive
dust
energy
environment
flame
furnace
guide
heat
hot
industrial
industry
iron
large
machine
manufacture
outdoor
oven
plant
power
pushing
removing
safe
safety
smoke
strength
work