"There would be three primary axes of rotation," Pei said, hauling himself near.

The building's primary axis runs north-south, and large entrances mark each cardinal direction.

In his thesis, he argued that the primary axis of conflict in the future will be along cultural and religious lines.

He selected the mountain as the focus of the primary axis of the Exposition.

These pixels are connected along one of the primary axes.

These pixels are connected along either one, two, or all three of the primary axes.

The primary axis functioned as the main avenue of communication with deities.

The axis that is fixed with respect to the ground can be considered a primary axis.

They are classified by the orientation of their primary axes with respect to the ground.

The secondary axis is then typically normal to the primary axis.