機器
abstract
blade
chip
circles
close up
closeup
coil
curves
cut
detail
edge
equipment
fabrication
finishing
flexibility
flexible
gray
grunge
helix
industrial
industry
instrument
iron
loop
macro
material
metal
metallic
nobody
object
part
pattern
pressure
production
rings
round
sharp
shiny
spiral
spring
stainless
steel
texture
tool
twist
wire