One strategy to ensure that users return to the site at periodic intervals is to offer them fresh information from time to time.
确保用户隔一段时间就回到网站的一个策略就是不断地向他们提供新信息。
The cron time daemon, which is responsible for running many services in the background at periodic intervals, generates its own logs of information.
cron时间守护进程负责定期在后台运行许多服务，并生成自已的信息日志。
The measurement error caused by finite intervals effect of measured value can be decreased using time cumulation or periodic expansion.
测量取值的有限时宽效应，可以采用时间累积或周期延拓方法，把测量方法误差降到足够小。
The measurement error caused by finite intervals effect of measured value can be decreased using time cumulation or periodic expansion.
测量取值的有限时宽效应，可以采用时间累积或周期延拓方法，把测量方法误差降到足够小。
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