機器
armed
armor
armored
armour
army
art
artillery
background
battle
blue
bright
cannon
color
colorful
combat
conflict
contour
defense
design
glowing
green
gun
heavy
icon
illustration
isolated
light
line
linear
lineart
military
neon
outline
power
silhouette
tank
technology
track
transport
transportation
turret
vehicle
war
weapon
world