機器
environmental
abstract
background
billet
cnc
cnc machine
cutting
ecology
economy
environment
fabrication
filings
gas
heavy
industrial
industry
iron
laser
machinery
manufacture
metal
molten
oxyfuel
pattern
piece
plasma
plate
processing
production
recycling
resource
round
rubbish
rust
rusty
scrap
shavings
shining
silver
square
steel
structure
structure steel
texture
waste
workshop