今天的模拟在概念上是相似的，但有一个关键的区别：陆军分析师的图是静态的，人工绘制和分析。
Today's simulations are similar in concept, but with one crucialdifference: the Army analysts' diagram was static, constructed by hand andanalysed manually.
星战概念设计师拉尔夫·麦奎立绘制了这些设计图，我们可以窥见剧集中科洛桑的部分景致。
These drawings by Star Wars concept designer Ralph McQuarrie provide a peek at the part of the city that will be depicted in the series.
这一章提出将一个工程项目分解为若干工作这一概念，其目的是便于绘制网络图。
This chapter developed the concept of breaking down a project into activities in order to draw its graph, or network.
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