英文關鍵字
animation
auto
automotive
background
black
blueprint
car
chamber
chrome
cog
combustion
component
crank
crankshaft
cylinder
design
diesel
engine
engineering
fuel
gasoline
gear
illustration
industrial
industry
isolated
machine
mechanic
mechanism
metal
motion
motor
oil
part
piston
power
render
rotating
scheme
shiny
silver
six
steel
technology
transport
transportation
vehicle