周期性意味着

periodically───adv.定期地；周期性地；偶尔；间歇

aperiodically───adv.不定期地；无周期地

periodic decimals───循环小数

periodic laws───[数]周期律；门捷列夫氏定律

periodic systems───[化学][数]周期系，[数]周期系统

periodical cicada───周期表

periodical cicadas───定期蝉

This effectively means that the client cache must check periodically to see if anything in the persistent rule data store has changed.───这实际上意味着必须定期检查客户机缓存，查看持久性规则数据存储中的任何内容是否已经更改。

Periodically he moved his castle, or changed the approaches to it by magical means, so that one never could be sure of finding it.───他定期移动他的城堡，或者通过魔法改变到城堡的方式，所以没有人能够确定无疑地找到他。

If no, that means one buyer need to place order and take action periodically each week to one supplier, Is it possible to fix one day to get PR and action report?───如果不是，那意味着同一个采购员在同一个周内要不断地根同一个供应商打交道。 我们是否能够在同一天得到所有的PR以及MRP措施报告？