A call to the kernel in which the kernel server thread runs on behalf of the user program. Compare with an exec call, where the kernel runs in the user program's context.

一个对于内核的调用，该内核运行于代表用户程序的内核服务器线程上(与一个执行调用比较，其内核是运行于用户程序的上下文环境中的。)

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After you create and run the kernel, invoking a method on a POJO service simply becomes an exercise in using the Geronimo kernel server and its reflection capabilities, as shown in Listing 4.

创建并运行内核后，调用POJO服务上的方法就变成了练习使用Geronimo内核服务器及其反射功能，如清单4所示。

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In Windows NT 4, the video, server, and printer spooler subsystems were moved into kernel mode.

在 Windows NT 4 中，视频、服务器和打印机后台处理程序子系统被移动到内核模式。

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After some investigation, the problem appeared to be in the Linux network file system (NFS) kernel, the piece of the operating system responsible for some basic server functions.

CNN: Linux gaining with mission-critical systems