機器
aerial
architecture
belt
blue
building
business
cement
commercial
concrete
construction
container
conveyor
day
deep
environment
equipment
europe
facility
factory
gravel
grey
heavy
hole
industrial
industry
machinery
madrid
manufacture
manufacturing
metal
pipes
pipework
plant
process
processing
produce
production
range
rock
sand
silo
site
sky
spain
steel
stone
storage
structure
tank
technology
tower
view
work
workplace