機器
alloy
aluminum
automotive
belt
car
chain
cog
combustion
concept
cover
cylinder
diesel
drive
drivechain
engine
engineering
equipment
gear
heavy
industry
injection
inside
internal
links
machinery
maintenance
mechanical
mechanics
metal
metallic
motor
motorbike
motorcycle
motorcycling
noise
power
repair
section
silver
sprocket
steel
transmission
transportation
valve
vehicle
vehicles
view
wheel
wheels