機器
abstract
age
aged
ancient
antique
background
barb
bolt
brown
burnt
clock
clockwork
closeup
cog
cogwheel
decay
design
detail
dirty
engine
gear
gears
grunge
history
industry
inside
iron
macro
mechanism
messy
metal
metallic
object
old
paper
part
retro
rough
round
rust
rusty
technical
technology
texture
time
turn
vintage
watch
wheel