機器
abandoned
abstract
background
bolt
brown
build
chrome
close
closeup
construction
corrosion
design
detail
dirty
equipment
fastener
gray
grunge
hardware
head
industrial
industry
iron
macro
material
mechanic
metal
metallic
nobody
nut
object
old
plate
rough
rust
rusted
rusty
screw
shiny
silver
stainless
steel
surface
texture
textured
tool
white
work