機器
acier
built
business
chemical
clouds
column
company
complex
construction
corporate
diesel
door
economy
emission
energy
environment
factory
furnace
generator
industrial
industry
insulated
machinery
manufacturing
material
metal
metallurgy
occupation
oil
outdoors
petrol
piombino
pipe
place
plant
pollution
production
resource
site
sky
smog
steel
structure
technology
toxic
wall
warehouse
window
work