估算成本是优化器用来比较查询计划的成本单元。
The estimated costs are cost units that the optimizer uses to compare query plans.
重点是RationalMethod Composer对待估算与对待其他技术和最佳实践的方式相同，例如用力分析或单元测试。
An important point is that Rational Method Composer treats estimation the same way as it treats other techniques and best practices, such as use case analysis or unit testing.
那么第一件事，让我们估算它们的和，不是对有限能级求和，有限能级适用于，分子链中有有限数目的结构单元的情况。
So the first thing is, let's approximate that we could take the sum not to some finite level, which would be the case if there's a finite number of elements in the chain.
并在基本假设的基础上，对射流击中装甲单元后在介质中产生的冲击波进行了压力估算，及装甲单元的壁板变形和射流变形的计算。
Based on the basic hypothesis, the shock wave pressure emerging in the medium after the jet punctures the armor unit is estimated, while deformation of the armor unit plate and the jet are calculated.
通过专家评判模式估算出了各行政单元的土壤侵蚀量。 利用吸附态氮磷污染估算模型估算出了污染物流失量和吸附态氮磷污染负荷。
The expert judgment model was adopted to estimate the soil erosion intensity, and the absorbed nitrogen and phosphorus estimating model were used to estimate absorbed nitrogen and phosphorus loads.
本文视油气藏为一个“容积单元化”的地质系统，利用泛克里金技术估算油气地质储量。
Referring to the oil and gas reservoir as a "Volume Unitized" geological system, the geological re - serve of oil and gas is estimated by using Universal Kriging technique in this paper.
建立了以特征为基本处理单元的并行成本估算模型，研究了产品设计过程中特征变化对产品成本的影响。
The concurrent cost evaluation model based on feature is built. The influence of the feature change at design stage on the product cost is studied.
建立了以特征为基本处理单元的并行成本估算模型，研究了产品设计过程中特征变化对产品成本的影响。
The concurrent cost evaluation model based on feature is built. The influence of the feature change at design stage on the product cost is studied.
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