This is also the fundamental reason for his cyclicaltheory of history.
这也是造成其历史循环论的根本原因。
2
This article uses economical cyclicaltheory and the agricultural cycle theory, analyzes the early warning system of the Jiangxi grain yield from 7 aspects.
本文利用经济周期和农业周期的相关理论，从7个方面分析江西粮食产量的预警问题。
3
Northrop Frye's theory of archetypal criticism is a cyclical system in motion based on myth archetypes.