I need to buy new rotary beaters for my mixer.

Rotamerisation is a process that involves the interconversion of different conformations of a molecule.

Rotamerizations are important in the study of molecular conformation.

I found a box of old rotary-dials in the attic.

I found an old rotary-dial telephone at the antique store.

I found an old rotary-dial phone in the attic.

I remember using rotary dialing to make phone calls when I was a child.

The printing company invested in new rotary presses to increase production.

Rotation curves are used to study the distribution of mass in galaxies.