英文關鍵字
assemble
automatic
automobile
automotive
bearing
bolt
box
camshaft
car
component
crankshaft
detail
drive
engine
equipment
gear
gearshift
generate
generator
heavy
iron
isolated
mechanical
mechanics
mechanism
motor
open
operation
part
pinion
propulsion
rotate
section
spares
spin
steel
technology
transmission
transportation
valve
vehicle