However, we often need to estimate projects before we have even started the analysis on them.
然而,通常甚至在我们开始分析项目之前,就需要对项目进行估算。
These first-ever projects have many similarities with pure research projects, where it is very difficult to estimate and predict the outcome.
那些第一次的项目同纯粹的研究项目之间具有很多相似之处,它们非常难以评估和预测结果。
Unlike on waterfall projects, an overall project estimate is adjusted after each iteration to improve its accuracy.
不像瀑布项目,项目评估在每次迭代中进行调整,不断改善精度。
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