機器
enviroment
abstract
black
blue
business
chips
clean
construction
craft
cutting
design
drill
ecology
economy
equipment
filings
grey
heavy
industrial
industry
iron
macro
metal
metal shavings
metallic
old
pattern
power
production
protection
recycling
rubbish
scrap
sharp
shavings
shining
silver
stainless
steel
technology
texture
time
trade
trades
waste
white
work
workshop