A large, white annular ring is present on the stipe.

These holes are often filled with annular rings (hollow rivets) to create vias.

The action type switch is located at the forward end of the forearm, and is formed as an annular knurled ring.

We will break the rotor area up into annular rings of infinitessimally small thickness.

Consider the annular ring, which is partially occupied by blades.

The length of each blade occupying the annular ring is (see figure below).

The z-component of the torque for the fluid in the annular ring is as follows:

The torque of the fluid in an annular ring in the wake is given by the following expression:

The outer disc is the annular ring.

Although the naked eye tends to doubt it, both the core and the annular ring contain the same number of square inches.