1·The only factor that affects you are the periodic cycles such as the one you are now completing.
唯一影响你的因素就是这种定期的循环，比如你现在正在完成的。
2·The empirical results show that Shanghai and Shenzhen stock markets are random walk process with deviation existing state sustainability and non-periodic cycles.
实证结果表明沪深股市均是有偏的随机游动过程，存在着状态的持续性和非周期性循环。
3·The cycles are periodic and optional.
循环是阶段性和可选择的。
4·The cycles are periodic and mandatory.
循环是阶段性和强制性的 。
5·Finding Cycles: periodic and Nonperiodic.
寻找周期：周期的和非周期的。