機器
armor
armored
armour
army
background
black
cannon
caterpillar
combat
contemporary
craft
design
engineering
equipment
fighting
gun
heavy
icon
illustration
image
isolated
machinegun
machinery
martial
mechanical
mechanics
mechanism
metal
military
modern
panzer
power
silhouette
single
symbol
tank
technology
track
transport
turret
war
wartime
weapon
white