对我来讲，按键的实用性是要给我们的最终用户一键操作，而且更多的是一键单程操作。
To me the key to usability is to give the end user one way to do something, and pretty much one way only.
开发出的软件运行结果与实际机构动作逼真，而且能够以简单程序操作，求出所需点的坐标值。
The working effect of analog software is true to actual machine, it can operate simple program, and extract the point coordinate index.
介绍一个DOS操作系统的菜单程序。
DOS menu programmed by using Novell Netware principles is presented.
文中介绍了九江炼油厂催化裂化装置将全回炼操作改为单程催化裂化操作的工业试验。
This paper presents the commecial test results of the FCC unit in Jiu-jiang Refinery by shifting the total recycle operation to once-through operation.
文中介绍了九江炼油厂催化裂化装置将全回炼操作改为单程催化裂化操作的工业试验。
This paper presents the commecial test results of the FCC unit in Jiu-jiang Refinery by shifting the total recycle operation to once-through operation.
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