機器
aluminum
アルミニウム
air
aircraft
airplane
alloy
aviation
backdrop
background
board
closeup
construction
design
detail
duralumin
engine
fan
flight
fuselage
grunge
grungy
industrial
industry
iron
layout
material
metal
metallic
military
motor
old
pattern
plane
plate
power
prop
propeller
retro
silver
sky
stainless
steel
technology
texture
transport
transportation
travel
turbine
vintage
white