The maintainability design for products depends on accumulative experience for a long time.
产品维修性的设计长期以来依赖于积累的经验。
However, the general generation process of maintainability design requirements which is the basis of a series of maintainability design activities still has some problems.
然而，作为一系列维修性设计活动基础的维修性设计要求一般生成过程还存在着若干问题。
However, the general generation process of maintainability design requirements which is the basis of a series of maintainability design activities still has some problems.
然而，作为一系列维修性设计活动基础的维修性设计要求一般生成过程还存在着若干问题。
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