機器
abstract
alloy
background
blue
chip
closeup
curly
cut
environment
flake
gray
heap
heavy
industrial
industry
iron
junk
macro
manufacture
manufacturing
material
melt
metal
metal working machine
metall
metallic
milling
pile
production
recycling
scrap
sharp
shavings
shine
shiny
silver
spiral
steel
swarf
technical
texture
trash
waste
white
workshop