最后，产品特性被分解成系统用例以及能够被进一步分析并作为系统组件的低级需求细化的补充需求。
Finally, the product features are broken down into system use cases and supplementary requirements that can be further analyzed and detailed as low-level requirements for the system components.
第三条是低级别的需求；它确实为软件必须完成的功能提供了足够的细节，使你能写成代码。
The third is a lower-level requirement; it does provide enough detail about what the software must do to enable you to write code.
程序(从低级的列目录程序到Web浏览器)的首要需求之一是：它应该是可配置的。
One of the first requirements of a program, from the lowly directory lister to the Web browser, is that it should be configurable.
SOACOE架构师负责定义接口、消息流和非功能需求(nonfunctional requirement,NFR)，以及低级功能需求。
The SOA COE architects are responsible for defining interfaces, message flows, nonfunctional requirements (NFRs), and lower-level functional requirements.
这样做，还允许分析需求(或更高抽象级别的模型)中的变更对所有低级别抽象模型的影响。
Doing that also allows for the analysis of the impact a change in requirements (or higher level of abstraction models) has on all the lower level of abstraction models.
从较低抽象级别到较高抽象级别的可跟踪性可确保较高级别的模型中的“需求”在较低级别模型中得到了处理。
Traceability goes from lower to higher levels of abstraction to make sure that "requirements" (needs) in the higher-level model are addressed in the lower-level model.
这样的双向可追溯性有助于确定所有初始需求已完全实现，并且所有较低级别的需求可以追溯到一个有效的来源上。
Such bidirectional traceability helps determine that all source requirements have been completely addressed and that all lower level requirements can be traced to a valid source.
“年青人缺乏信仰，导致他们用一种教低级的方式来满足他们的需求，”她说。
"The lack of beliefs among young people leads them to fulfill their needs in a lower way," she said.
文章包含例如这样的选项：“改变了的是对于理解低级编程或是任何编程的需求。
This article contained choice lines such as the following: "What has changed is the need to know low-level programming or any programming at all."
高级安全策略又称为安全需求，低级策略配置是高级策略的实现，正确的低级策略配置必须能够满足安全需求。
We treat high-level policy as security requirement and low-level policy as the implementation of the high-level policy, a proper low-level policy configuration must meet the security requirement.
在需求被很好的管理的情况下，跟踪性可以通过从初始需求对应到低级别需求，以及从低级别的需求回溯到其根源来建立。
When the requirements are managed well, traceability can be established from the source requirement to its lower level requirements and from the lower level requirements back to their source.
在需求被很好的管理的情况下，跟踪性可以通过从初始需求对应到低级别需求，以及从低级别的需求回溯到其根源来建立。
When the requirements are managed well, traceability can be established from the source requirement to its lower level requirements and from the lower level requirements back to their source.
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