Not as required的意思|示意

Namespaces on property names are not strictly required for RDF, but are highly recommended as a way to disambiguate such names.

RDF并不严格要求特性名的名称空间，但极力建议将它作为消除这些名称的歧义的方法。

The back-end drivers need not be common as long as they implement the required behaviors of the front end.

后端驱动程序不需要是通用的，因为它们只实现前端所需的行为。

Extensions are not a required feature of the grammar and, thus, their syntax is not as well defined as the other constructs of the language.

扩展并不是文法必需的特性，因此它们的语法不象该语言的其它构造那样得到良好定义。

In certain cases, as determined by the optimizer, the intermediate temp table is not required, which is reflected in the plan.

在某些情况下，由于是由优化器决定的，就不需要中间临时表，这会反映在计划中。

The columns are rendered as they are required, so scrolling the view for the first time is not usually as smooth as it is later.

只在需要栏的时候才呈现它们，所以第一次滚动视图时不像之后滚动它时那么顺畅。

These functions are not required as simple components can encompass these steps in their actual code, or you may find other ways of establishing common usage of the APIs.

在简单的组件中，还用不到这些函数，因为简单组件的代码就包含了这些步骤，或者可以找到其他方式实现这些 API 的通用用法。