虽然测试工程师不能估算总的项目成本，但是他们的确可以评估对成本的测试贡献，并且提出测试风险和可行性。
While test engineers cannot estimate total project cost, they can certainly estimate testing contribution to cost, and suggest test risks and feasibility.
在道路项目完成后，Olken让工程师在各条道路上挖取核心样品，以估算使用的材料的数量。
After the road projects were completed, Olken had engineers dig up core samples in each road to estimate the quantity of materials used.
在项目开发过程中的某一特定阶段的成本估算就是造价工程师在现有数据基础上对未来成本的预测。
A cost estimate at a given stage of project development represents a prediction provided by the cost engineer or estimator on the basis of available data.
因而，在工程师估算完成前的相当长时间里，只能用详细估算来作为控制预算，因为详细估算也能充分明确地反映项目的范围。
Consequently, the detailed estimate is often used as the budget estimate since it is sufficient definitive to reflect the project scope and is available long before the engineer's estimate.
工程师估算要以明确的施工计划和施工说明为基础，并且业主也可以据此发包选择施工承包商。
The engineer's estimate is based on the completed plans and specifications when they are ready for the owner to solicit bids from construction contractors.
估算技巧工程师依赖熟悉的单位和熟悉不同层面以及价值层面。
Estimating skill of an engineer is dependent on familiarity with dimensional units and familiarity with the different values along the dimensions.
林道工程师早就知道如何估算运材道路的建筑费用，但在道路建成之前，却无法很好地预估道路建成之后的车辆运营费。
Forest engineers have long known how to estimate construction costs of a logging road, but operating costs of log trucks can not be well quantified before the road is built.
林道工程师早就知道如何估算运材道路的建筑费用，但在道路建成之前，却无法很好地预估道路建成之后的车辆运营费。
Forest engineers have long known how to estimate construction costs of a logging road, but operating costs of log trucks can not be well quantified before the road is built.
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