機器
antique
automatic
background
black
board
box
broken
business
buttons
cable
circuit
clock
control
design
desk
details
dirty
electrical
equipment
factory
green
indicator
industry
instrument
lamp
light
line
machinery
material
measure
mechanism
metal
off
old
panel
power
push
red
retro
rusty
sign
steel
style
supply
switch
technology
vintage
white
yellow