...量有多种不同的形式，如空间冗余（spatial redundancy）、时间冗余（temporal redundancy）、结构冗余（structural redundancy）、 知识冗余（knowledge redundancy）和视觉冗余（visual redundancy）等，数据压缩 的实质是减少这些冗余量。
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传统EAI系统往往具有扩展性差、关系繁琐、结构冗余、管理困难等缺点。
Traditional EAI had many deficiencies, such as poor extensibility, complexity in relations, structural redundancy and management difficulty.
传统的设计方法存在设计周期长、结构冗余、成本高、缺乏对结果的验证等诸多弊端。
There are many problems in traditional design method such as long period, structure redundancy, high cost and lack of validation etc.
在大规模定制环境下，现有的产品数据管理方法和工具在管理产品族数据时，将导致物料清单结构冗余和管理的低效率。
It is redundant and inefficient to manage tne data of product family for mass customization by traditional PDM approaches and tools.
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