An alphanumeric part number. This part number is unique and could suffice as the primary key.

字母数字零件号此零件号惟一并且可以用作主键。

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These tables usually have a personnel number as part of their key.

这些表的键通常包含人员编号。

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Brand strategy is a key part as to the ups and downs of the enterprises. The number of the famous brands is an important standard to measure the economic power of a country or an area.

名牌战略是关系到企业兴衰成败的大问题，拥有名牌的多少是衡量一个国家和地区经济实力强弱的重要标准。

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"I want to emphasize our commitment to the Nigerian market,". "This new flight is a key part of Delta's African expansion and ensures that we maintain our position as the number one US carrier to Nigeria and more broadly to Africa."

VOA: standard.2009.06.13

Stalkers see their activities as an important part of land management - a key method of regulating the number of deer in the wild.

BBC: Why huge Devon stag Emperor was killed