機器
abstract
aluminum
background
closeup
color
curled
cutting
cuttings
engineering
filings
frame
garbage
gray
heap
heavy
horizontal
industrial
iron
isolatedbackground
material
messy
metal
metallic
metalwork
milling
part
pattern
recycling
scrap
shavings
shiny
silver
spiral
steel
steel shavings
swarf
technology
textured
twisted
waste
wealth