Physics.
the rate at which collisions are occurring per unit volume per unit time, usually pertaining to the collisions of neutrons in a nuclear reactor.
Physics.
the rate at which collisions are occurring per unit volume per unit time, usually pertaining to the collisions of neutrons in a nuclear reactor.
Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012