In some games, it controls the rate at which experience points are earned, or the amount needed to level up.

Then, too, a region in the brain stem controls the respiratory rate.

What I had found was something there that controlled the overall rate at which cells divided.

Lane Dean tried to control the rate of his heartbeat.

Encouraging participation in managed health care plans, he said, would not reduce costs but could control the rate of increase.

You must also have the ability to control the rate of flow of fuel.

Both are intended to control the rate of fire in fully automatic mode.

He could control the rate of energy conversion in order to turn objects into explosive charges.

A goal is to control the rate at which water can get into polymers.