Gear is an indispensable and important part of the machine, which is composed of toothed wheel-shaped parts and works together to make the machine rotate normally. This paper will discuss the meaning and usage of "tooth" and "wheel" in gear, so as to help readers better understand this important machine part.

The meaning and use of teeth

The teeth in the gear are arranged in a tooth shape, and they work together to make the gear rotate normally. The teeth in the gear are similar to the "teeth" of the organs that chew food in human and animal mouths.

The meaning and use of wheels

A wheel is something that can turn on a machine and make it run, such as a gear. At the same time, a wheel can also refer to a round object similar to a wheel, such as sun gear and Moon Wheel.