This approach requires that all the tasks and their durations be known at the onset of the project.

该方法要求在项目的开始就知道所有的任务及其持续时间。

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Schedule development-analyzing activity sequences, activity durations, and resource requirements to create the project schedule.

编制进度计划——分析工序顺序、工序持续时间和资源需求。

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This is the process necessary for analyzing activity sequences, durations, resource requirements, and schedule constraints to create the project schedule.

这是分析活动顺序、持续时间、资源要求，以及进度制约因素和制定项目进度表所必需的过程。

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