首先介绍了数控系统用户宏程序功能编程的特点和应用范围，并列举了两个典型实例。
The properties and application range of user macro programming is introduced, and two typical examples is enumerated.
刀具补偿功能是数控机床所特有的重要功能，用户宏程序是用户提高数控机床性能的特殊功能。
Cutter compensation is the special important function of nc machine, and user macro program is used to improve the capability of nc machine.
通过对用户宏程序的划分，对适于宏程序编程的典型零件的图形、参数及工艺文件进行详细描述。
Through the dividing of user macros, the article describes in details the typical parts graphics, parameters and process documents suitable for macro programming.
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