【运输】交叉轴上的齿轮操作【运输】十字轴控制装置

gearing with gears shiftable otherwise than only axially

bevel gears

adjusting devices for change-speed gears for cycles

toothed gears

power transmission of bicycles by means of gears

crossed helical gears

spiral gear pedestal gearing (pedestal gears)

number of gears【机】