the lay ratio is the ratio between the lay length of the cabble and the Outer diameter af the cable( or the layer)

lay ratio = lay length / OD

and the lay ratio standard from ISO

If the lay ratio of a standard conductor is increased, resistance will diminish.

armoured OD X 10 time and gain lay of armouring.

The biggest eggs in the world belong to the ostrich, but to body ratio it's kiwi eggs. They fill up almost the entire female, squishing her organs, and some females don't survive laying them.

American Heart Association CPR compression ratio is 30 compressions to 2 breaths. This is the ratio for Adults, Children, and Infants (lay rescuer). The compressions are given at a rate of 100/minute.