No non-prime attribute in the table is functionally dependent on a part (proper subset) of a candidate key.

不存在非主属性对任一候选键滴部分函数依赖。

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Those new pieces include two new nuclei (byproducts), some photons (gamma rays), but also some more free neutrons, which is the key that makes nuclear fission a good candidate to generate energy.

产生的新组成包括两个新原子核(副产物)、一些光子(伽马射线)以及更多的自由中子，它们是参与核裂变反应并产生能量的关键。

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For example, if you are creating a Customer table and the CustomerID is marked as not null, then when you define the primary key, CustomerID will show as a candidate column.

例如，如果您要创建一个 Customer 表并且 CustomerID 被标记为 not null，则当您定义主键时，CustomerID 将会显示为备选列。

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Woolsey has been named in news reports as a possible candidate for a key position in the reconstruction of a postwar Iraq.

CNN: Ex-CIA director: U.S. faces 'World War IV'

The other, Minna Nashef, is a previous candidate running a more low-key campaign.

WSJ: There's Lots of Yelling in This Campaign

Mr Berlusconi recently chose the PdL's candidate for a key governorship without consulting its officials.

ECONOMIST: Silvio Berlusconi under fire: The sultan and the vizier | The