英文關鍵字
assembly
auto
automobile
automotive
background
black
car
combustion
cylinder
diesel
disassembly
dismantle
energy
engine
engineering
equipment
factory
garage
gasoline
gear
industrial
industry
internal
iron
machine
machinery
maintenance
material
mechanic
mechanical
mechanism
metal
metallic
motor
piston
power
repair
service
shaft
shop
spare
sprocket
steel
technology
transportation
vehicle
work
workshop