The abstract system that an author constructs exists only in his mind, and the physical manifestation — the book — is only a convenient means of storage and distribution.
作者建造的抽象系统仅仅存在于他的脑海里，它的物理表现(书)仅仅是为了方便的保存和发行的一种手段。
Finally the paper discussed the performance of automatic abstract system.
最后对自动摘要系统的性能进行了讨论。
So it is necessary to define ECG IHE integration profile to abstract system integrations related to ECG and provide criterions for system development and integration of vendors.
因而有必要定义心电IHE集成模型来抽象相关系统的集成，规范各厂商的系统开发和集成。
So it is necessary to define ECG IHE integration profile to abstract system integrations related to ECG and provide criterions for system development and integration of vendors.
因而有必要定义心电IHE集成模型来抽象相关系统的集成，规范各厂商的系统开发和集成。
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