機器
abstract
aluminum
background
chips
closeup
curly
cut
engineering
fabrication
gray
grey
grunge
industrial
industry
iron
lathe
manufacture
manufacturing
material
metal
metallic
metalwork
production
recyclables
recycle
recycling
rip
scrap
sharp
shavings
shine
shiny
spiral
stainless
steel
structure
swarf
technology
texture
textured
trash
turning
waste