機器
armed
armor
armored
armour
army
art
artillery
background
battle
cannon
color
colorful
conflict
contour
defense
design
gun
heavy
icon
illustration
isolated
line
linear
lineart
military
outline
pop
popart
poster
power
retro
russia
russian
silhouette
style
tank
technology
transport
transportation
turret
vehicle
vintage
war
weapon