代序，指时序更替；代替序言或引言的文章。语出《楚辞·离骚》：“日月忽其不淹兮，春与秋其代序。”
定义一个严格的序列，比如在瀑布模型中，与在并行工作中定义一个半排序的迭代序列是基本相同的。
Defining a strict sequence, as in a waterfall model, is just as much a process as defining a semi-ordered sequence of iterations in parallel work.
在提取高分辨率年代序列的基础上，绘制出多幅遗址群分布地图，初步恢复性重建了宁绍平原考古时代的聚落群景观。
In the light of accurate chronology, the author draws some distributing maps of the sites group and tries to reconstruct the ancient settlements of Ningshao plain.
给出了指数迭代序列的极限函数的一些性质。
Some properties of the limit function of the iterated exponentials sequence are presented.
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