The small gear is fixed and supported by a bearing seat.

小齿轮由轴承座固定支撑。

youdao

Internal gear pump is the small gear wheel, the big gear for driven wheel, in work big gear with small gear cocurrent rotation.

内啮合齿轮泵中的小齿轮是主动轮，大齿轮为从动轮，在工作时大齿轮随小齿轮同向旋转。

youdao

Rack and pinion: Mechanical device consisting of a Bar of rectangular cross section (the rack), having teeth on one side that mesh with teeth on a small gear (the pinion).

齿条和小齿轮：一种机械装置，由一条矩形截面的杆(齿条)和一个与齿条上的齿相啮合的小齿轮组成。

youdao

They look like an extra-large version of the World War Two jeep, but enclosed, with small blast-proof windows, a protected machine gun position on top and a variety of high-tech gear inside and out.

VOA: standard.2009.11.02

A little farther down Granville Street is the Granville Sports Corner shop, a small,dimly lighted shop with every centimeter from floor to ceiling crammed with commemorative team gear not just Canada, but also Switzerland,Germany, the Czech Republic, the United States and Finland.

VOA: standard.2010.02.17

On the back wheel: the small sprocket is top gear, the large sprocket is bottom.

BBC: Sport

But at the chainwheel the small ring is low gear and the big ring is high.

BBC: Sport

When it comes to critical gear for your small office, don't scrimp on additional research.

FORBES: Small Office Tech Toolbox