機器
bright
business
cast
casting
construction
container
conveyor
crane
equipment
factory
fire
flame
foundry
furnace
heat
heavy
hot
industrial
industry
interior
iron
light
line
machinery
manufacture
manufacturing
melting
metal
metallurgical
metallurgy
metalwork
molten
plant
power
process
production
red
shop
smoke
steel
steelworks
technology
temperature
warehouse
work
worker
workplace
workshop