英文關鍵字
axial
beaver
bevel
cogwheel
energy
fashioned
forward
gear
gearbox
gearcase
gearing
hypoid
machine
mill
old
power
retro
steel
straight
teeth
transform
transmission
turn
unit
vintage
water
wheel
wheelbox
woofden
working
英文關鍵字
axial
beaver
bevel
cogwheel
energy
fashioned
forward
gear
gearbox
gearcase
gearing
hypoid
machine
mill
old
power
retro
steel
straight
teeth
transform
transmission
turn
unit
vintage
water
wheel
wheelbox
woofden
working