As a term, it can be said as "间隔性重复，间隔重复，间歇重复"。 But actually， we Chinese seldom say that, after all , it is a introduced word for us. But, we can easily understand it if you say that in a describing way, for example, 隔一段时间复习一次 / 经常复习 (review regularly / practice often) maybe much better.