英文關鍵字
auto
automatic
automobile
automotive
block
blue
combustion
compression
cylinder
detail
diesel
dirty
electric
electricity
energy
engine
equipment
farm
filter
fuel
gas
gear
industry
iron
lorry
machine
mechanic
mechanical
metal
metallic
motor
oil
old
petrol
pipes
piston
power
propulsion
pump
relevant
repair
rolling
rusted
technology
torque
tractor
transportation
truck
valve
vehicle