The instance does not exist in any other entity set.
实例不存在于任何其他实体集中。
No two entity keys within an entity set can be identical.
实体集中不能存在两个相同的实体键。
Each entity must have a unique entity key within an entity set.
实体集内的每个实体必须要有一个唯一的实体索引键。
The entity key for the instance is unique within the entity set.
实例的实体键在该实体集中是唯一的。
Set scientific research, production and management as one corporate entity.
集科研、生产和经营为一体的实体企业。
Is a set of electronic product development, production and sales of high-tech integrated economic entity.
是一家集电子产品的研发、生产和销售于一体的综合性高科技经济实体。
In 1999, the first entity store was set up.
1999年，设立第一家实体经营店。
一是领办实体模式。
一是领办实体模式。
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