機器
abandoned
absorber
abstract
aged
ancient
antique
background
beam
construction
damper
decayed
derelict
detail
dirty
disused
employment
eroded
factory
gear
gridiron
grunge
historical
idled
industry
iron
metal
metallic
no people
nostalgia
nostalgic
outdoors
pipeline
retro
roller
roof
rusteaten
rusted
rusty
shock
shutoff valve
steel
structure
unemployment
vacant
vibration
vintage
wheel