機器
abstract
alloy
aluminium
aluminum
background
brushed
design
factory
floor
frame
gray
grey
hard
heavy
industrial
industry
iron
ironworks
line
manufacture
manufacturing
material
metal
metallic
new
pattern
plant
plate
polished
reflection
roll
rough
shaped
sheet
shiny
silver
square
stack
stainless
steel
strong
surface
texture
textured
wall
wallpaper
warehouse
worker
zinc