機器
auto
automobile
automotive
box
car
composition
drive
engine
engineer
fix
force
gear
gearbox
gearing
glasses
hard
industry
machinery
machining
manual
mechanic
mechanical
metal
part
power
product
production
repair
rotate
rotation
serrate
serrated
serration
service
spare
speed
spin
sprocket
steel
surface
technical
technology
torque
transfer
transmission
vehicle
wheel
work
worker