我们在实践中发现，除非一个项目是完全空白的，否则，除了进行自上而下的分析外，还需对预先存在的代码和业务逻辑进行自下而上的分析。
In practice, we find that unless a project is entirely green field, in addition to a top-down analysis, there is a simultaneous bottom-up analysis of pre-existing code and business logic.
但是，考虑到众所周知统一俄罗斯党精于选举，许多分析家不确信能够发生自下而上的变革。
But given United Russia's reputed skill at engineering elections, many analysts are not sure that change can come from the bottom up.
RDA可用于采取自下而上或自上而下的方式开发数据模型，允许分析已有数据库和通过对已有数据资产的反向工程开发数据模型。
RDA can be used to develop data models in either a top-down or bottom up manner, allowing analysis of existing databases and development of data models by reverse engineering of existing data assets.
下图在WebSphereBusinessModeler 中创建，显示了业务分析师和数据建模师在自下而上场景中的交互
The following figure, created in WebSphere Business Modeler, shows the interaction between business analyst and data modeler in the bottom-up scenario
文章通过“自下而上”和“自上而下”两种阅读过程分析了词汇在英语阅读教学中的重要作用。
This paper analyzes the importance of lexis in English reading teaching by "bottom-up" and "top-down" reading processes.
在进行失效机理深入分析和可靠性试验的基础上，确立自下而上的设计思路，介绍了各种新的设计方法。
This paper presents the design idea from bottom to top, and introduces various new design methods on the basis of analysis of failure mechanism and the reliability test.
应用自上而下的需求分析和自下而上的系统设计，进行CAN总线系统的总体方案设计。
A can bus system scheme can be designed through bottom-up requirement analysis and top-down system design.
应用自上而下的需求分析和自下而上的系统设计，进行CAN总线系统的总体方案设计。
Can bus system scheme can be designed through bottom-up requirement analysis and top-down system design.
文中采用自下而上的分析方法，并结合契约思想，实现了对指针的跨过程检查。
Based on bottom-up analysis and contract theory, this paper implemented the inter-procedural check of the pointer validity.
文中采用自下而上的分析方法，并结合契约思想，实现了对指针的跨过程检查。
Based on bottom-up analysis and contract theory, this paper implemented the inter-procedural check of the pointer validity.
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