英文關鍵字
background
chips
closeup
curly
cutting
discarded
environment
fabrication
filings
flakes
gray
heap
industrial
industry
iron
junk
lathe
manufacturing
material
materials
metal
metallic
metalwork
milling
pile
processing
production
recycling
scrap
sharp
shavings
shiny
spiral
spirals
stainless
steel
texture
waste
workshop