機器
environmental
abstract
background
bin
brass
curled
curly
cut
cuttings
edge
engineering
environment
fabrication
garbage
industrial
industry
iron
lathe
machined
machining
manufacture
manufacturing
material
metal
metallic
metalwork
pieces
pile
pollution
recycle
recycling
rip
rust
rusted
scrap
sharp
shave
shavings
shine
shiny
spiral
stack
steel
swarf
technical
technology
trash
twisted
waste