As she drew power, the crystal rotated smoothly until it was pointing back the way they had come.

The key rotated smoothly when she tried it.

Ball bearings provide robust support for a heavy object to rotate smoothly and reliably even under abnormal stress, such as if the watch were dropped.

Throttle controls rotate smoothly for extraordinary control.

The Hurricane rotated smoothly and cleanly, as if it were drilling its way through the air.

Airspeed fell away; the nose of the craft rotated smoothly toward the vertical-and past!

The point on the camshaft which connects the connecting rod, rotates smoothly at a constant velocity in a circle.

His palms hit the mat, and he rotated smoothly forward.

Ball bearings allow the wheels to rotate freely and smoothly.

It rotated smoothly to the right and stopped, pointing down the length of the outer wall.