英文關鍵字
aged
auto
automobile
automotive
background
block
car
crankshaft
cylinder
detail
diesel
dirty
energy
engine
engineering
fuel
garage
gasoline
gear
generator
head
industrial
industry
iron
isolated
machine
machinery
mechanic
mechanical
metal
metallic
motor
oil
old
open
part
pipe
piston
power
repair
service
spare
steel
system
technology
transmission
unit
valve
vehicle
workshop