機器
abandoned
aged
bad business
broken
chain
close up
cobweb
cog wheel
cogwheel
damaged
desolation
detail
dirty
dust
dusty
equipment
factory
financial crisis
forgotten
gear
gloomy
grunge
industrial
industry
iron
obsolete
old
past
plant
rough
rust
rusty
spider web
spiderweb
sprockets
still life
system
technical
technology
urbex
vintage
weathered
winch