You can still use this function in an expression to determine if a particular built-in or extension function is supported as the stylesheet element is being processed.

仍然可以在表达式中使用该函数，确定在处理样式表元素的过程中处理程序是否支持某种内置的或扩展的函数。

youdao

How to detect when the project should be built, specified in the element?

如何检测什么时候应当构建项目，在元素中指定？

youdao

These two message definitions have purposefully been built using the same element references, in order to show reuse of existing definitions by the File nodes.

这两个消息定义是使用相同的元素引用有意地构建的，以便说明 File 节点对现有定义的重用。

youdao

As the first step towards the commercialization of its new CMOS image sensors, Sony has developed a model with built-in signal processing functionality, an element that usually requires external embedment.

ENGADGET: Sony's new cameraphone CMOS jams bigger gear into the same space (video)

This element will be built in to all of our planned activities as and where appropriate, and show-cased in accessible form on our project website.

UNESCO: EARTH SCIENCES FOR SOCIETY