periodics期刊periodicadj.周期的；定期的；间歇的；完句的periodic splines周期样条函数periodic numbers周期数periodic pattern周期方向图periodic rolling周期断面轧制periodic therapy周期疗法periodic focusing周期场聚焦periodic fimction周期函数periodic syndrome周期性综合症periodic reaction周期反应periodic asthenia[医] 周期性衰弱

1. We simulate the stochastic cycle time and get its mean and variance.
   我们模拟随机的周期时间，得到平均值以及变异数。
2. "A science fiction cannot not be regarded as a mere entertainment, but in fact it tells the reader much more."
   "科幻小说不能简单地看成是供消遣的，而实际上它给读者展示更深刻的内容。"
3. Main memory cycle time has bottomed out.
   主存贮器的周期已趋饱和。
4. What is the production time after the proof is approved?
   在获得批准证明后你们的生产周期是多长？