機器
automobile
automotive
car
combustion
concept
container
crankshaft
cycle
cylinder
engine
engineering
equipment
four
fuel
gasoline
gear
graphic
high
illustration
injector
intake
internal
iron
isolated
machinery
manufacturing
mechanic
mechanical
metal
motor
objects
part
piston
plug
power
pressure
repair
rod
service
spark
steel
stroke
system
technology
transportation
valve
vehicle
work