而对有些历史数据完全的工作，即便数据之间成非线性关系，仍可预测其成本超支和完工百分比。
For activities with good historical records, it can be the case that a typically non-linear profile of cost expenditures and completion proportions can be estimated.
该预算成本也要定期更新，以反映完工前的预测成本，并确保项目完工前的现金投入。
The budgeted cost should also be updated periodically to reflect the estimated cost to completion as well as to insure adequate cash flows for the completion of the project.
完工成本也能用来预测工作进度。
The cost incurred to date can also be used to estimate the work progress.
完工成本也能用来预测工作进度。
The cost incurred to date can also be used to estimate the work progress.
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