利用便携式图像捕获设备获取当前工作间隔标志牌的实时图像，并用于判断工作人员是否走错间隔。
The signboard image of operating bay is captured by portable camera in real time, based on which it is determined whether the working staff has accessed to the proper bay.
可以在代码中放上标志，检查完成特定操作所需要的时间间隔。
They can place markers in the code and check the elapsed time it takes to complete certain operations.
–q 标志指定 Sendmail 守护进程在邮件队列中保存邮件的时间间隔。
The –q flag specifies the interval at which the Sendmail daemon processes saved messages in the mail queue.
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