为了提高性能，JCS在文件磁盘上存储实际缓存数据的同时，会在内存中存储缓存数据键。

To improve performance, JCS stores the cached data keys in memory while storing the actual cached data on the file disk.

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如果目标模型跨多个表，数据差异分析还必须考虑数据键和键关系，以便有效地链接数据元素。

Where the target model is spread across multiple tables, the data Gap Analysis must also consider data keys and key relationships to effectively link data elements together.

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例如，可能需要先输入数据，然后才能知道或验证外键是什么。

For example, you might need to enter data before you know or can validate what the foreign value is.

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So, in fact, yes, we did confirm that these covalent bond, at least in the case of hydrogen, we have confirmed by the numbers that we are at a lower energy state when we talk about the bonded atom versus the individual atom.

因此，事实上，是的，我们证实了共价键，至少在氢这种情况下，我们通过数据证实了,成键的原子处于能量更低的状态,当其与单个的原子相对比时。

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