On the basis of understanding the specification of SVG, this paper expands SVG on macro-lay and micro-lay according to the special requirements of a graphic platform used in power systems.
在理解SVG规范的基础上，本文根据电力图形的特殊要求，从宏观和微观两个层面扩展了SVG。
The principal objective of the systems-analysis phase is the specification of what the system needs to do to meet the requirements of end users.
系统分析阶段的主要目的是详列系统必须要符合用户的哪些需求。
The principal objective of the systems-analysis phase is the specification of what the system needs to do to meet the requirements of end users.
系统分析阶段的主要目的是详列系统必须要符合用户的哪些需求。
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