機器
air
air filter
antique
armament
artillery
auto
automaton
automotive
black
bmw
camera
cannon
car
carburetor
chrome
clutch
cylinder
device
diesel
electronic
engine
engineering
equipment
exhaust
filter
flywheel
gear
highangle gun
industry
injection
instrument
mechanic
mechanical
mechanism
metal
metallic
motor
museum
old
part
pipes
piston
power
silver
speed
steel
technology
transportation
valve
vehicle
weapon