This causes grasping the system operation environment and establishing exact mathematical model of the controlled process to be quite difficult.

这使得把握系统运行环境和建立受控过程准确的数学模型比较困难。

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Because a portion of this tutorial deals with graphical elements of the Emacs operation in the X Window System environment, you should also have an X server up and running.

因为本教程中的部分内容研究了对X窗口系统环境中Emacs图形元素的操作，所以您应该拥有一台正常运行的X服务器。

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Part 1 describes essential tasks for system administration and operation of a healthy WebSphere Process Server production environment. It covers various approaches and tools.

第1部分介绍WebSphere Process Server系统管理的基本任务和正常作业环境的操作，包括各种方式和工具。

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