by rotation

It was eventually decided that you should cultivate the lands by rotation.

So some farmers make the decision to change the crops in each field from one year to another, by rotation.

They separate their father and mother and takes care of them by rotation.

Midway through the challenge, the designers were asked to swap fabrics by rotation.

The magnetization at any point in a ferromagnet can only change by rotation.

T, and U can be oriented in 4 ways by rotation.

V and W also can be oriented in 4 ways by rotation.

I can be oriented in 2 ways by rotation.

There are about 320 million, not counting those that differ only by rotation and reflection.

Any close approach we make by rotation should be near one of them.