For software maintenance, because it is a long-term problem of unpredictable, this paper expounded in relevant theoretical knowledge.
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The customer Unit price is the basis for Software Maintenance customer price definition.
客户单价是软件维护合同定价的基础。
This is especially true for software maintenance activities, which often follow established patterns more readily than new development.
这对软件维护活动尤其正确，它们经常比新的开发更容易地遵循已建立的模式。
The maintenance window is used for application software patching, as well as data backups.
这个维护窗口可以被用来为应用软件打补丁和数据备份。
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