With thorough discussion of the secondary development mode based on No.l Military Medical Project, this paper divided the secondary development mode from statement to system of four different levels, and proposed that different requirements should adopt the development mode, having certain directive significance for secondary development work.%本文在深入讨论基于"军卫一号"系统的二次开发模式基础上,将其分为从语句到系统的4个不同等级,对不同需求应当采用的开发模式提出了建议,对于二次开发工作具有一定的指导意义.
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