What's the cost of this XSLT abstraction layer?

XSLT 抽象层的代价是什么？

HAL is a specification and an implementation of a hardware abstraction layer.

HAL是一个硬件抽象层的规范(描述)和实现.

Unfortunately XAMPP doesn't yet come with a database abstraction layer for Perl.

不幸的是，XAMPP 中并没有包含一个用于 Perl 的数据库抽象层。

It is written primarily in PHP and incorporates the ADODB database abstraction layer.

它开始是用PHP编写的,集成了ADODB数据抽象层.

If you use an Ajax toolkit, the abstraction layer will resolve any naming conflicts.

如果您使用 Ajax 工具包，则抽象层将解决任何命名冲突。

A sample database abstraction layer is presented in Listing 2-6, followed by an example of a MySQL-specific data access layer in Listing 2-7.

示例数据库抽象层，提出在清单2-6的决定，由一个MySQL特定的数据访问层的例子在上市后2-7。

ADEOS is a hardware abstraction layer (HAL), or nano-kernel, that provides real-time capabilities in the Linux kernel.

ADEOS是一个在Linux内核中提供实时功能的硬件抽象层（HAL）或超微内核。