機器
abstract
alloy
aluminium
aluminum
art
background
banner
black
chrome
closeup
dirt
dirty
durable
factory
hard
heavy
industrial
industry
iron
macro
material
metal
monochrome
panel
plate
polished
rough
scratch
shape
sheet
shine
shiny
silver
sleek
space
stainless
steel
strong
style
surface
swirl
technology
texture
tile
titanium
tough
vintage
wall
wealth