In casual parlance, a theory is basically an idea or thought.It probably has no carefully collected data to back it up, let alone any rigorous hypothesis testing or experiments.

在非正式说法里，一个“理论”基本上就是一个概念或思想，它可能还没有仔细地收集到支持它的数据，更谈不上有什么严格的假设检验或实验根据。

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In casual parlance, a theory is basically an idea or thought. It probably has no carefully collected data to back it up, let alone any rigorous hypothesis testing or experiments.

在非正式说法里，一个“理论”基本上就是一个概念或思想，它可能还没有仔细地收集到支持它的数据，更谈不上有什么严格的假设检验或实验根据。

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In the process of the debugging and the ball cartridge testing, read back the collection data and draw out the experiment curve.

在调试和所做过的实弹试验中均将所采集的数据进行了读取，并绘出了试验曲线。

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At their best, these sites provide clear and accurate performance data instead of just trumpeting their winners, and have simple methods for back-testing results.

FORBES: Stock Pickers

We worked with Lab49 on a back-testing strategy using MapReduce and found that if you can avoid moving data to servers or into storage you get much better performance.

FORBES: Big Data Analyzed Fast In Memory -- For Finance, Online Dating, Home Shopping Network