英文關鍵字
1080
abstract
car
combustion
design
engine
engineering
gear
gears
hard
illustration
industry
inside
machine
machinery
mechanical
mechanism
metal
motor
movement
piston
speed
start
technical
technology
work
英文關鍵字
1080
abstract
car
combustion
design
engine
engineering
gear
gears
hard
illustration
industry
inside
machine
machinery
mechanical
mechanism
metal
motor
movement
piston
speed
start
technical
technology
work