如果时间差是负数，可以视为一个错误，因为永远不会在延迟时间结束后，在一个更早的触发时间从队列中取得项。
If the delta is ever negative, consider that an error, as you should never get an item from the queue with an earlier trigger time, when the delay has ended.
如果你有一个运行时间很长的数据库查询(比如由按钮点击所触发)，那么在按钮事件产生后你可以增加延迟时间。
If you have a long-running database query for example that's triggered by a button press, you can simply increase the time paused after the button event has been issued.
非常灵活地设置测量时间和每次测量数据点的数目及闪光触发后的延迟时间。
Flexible setup of measurement time, number of data points for each measurement and delay time after flash trigger.
该采集卡的最大特点是可以由程序设定每次同步触发后的采样延迟时间和采样的点数。
The main features of the card show that it can set delay-time and the length of acquisition after triggering.
该采集卡的最大特点是可以由程序设定每次同步触发后的采样延迟时间和采样的点数。
The main features of the card show that it can set delay-time and the length of acquisition after triggering.
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