子程序是在一段程序中可以被重用的部分，就像活字那样。
A subroutine is a part of a program that can be re-used, just like movable type.
如果以前有人编写了一段很优秀的发牌子程序，那么重新用那个子程序是有意义的。
If, some time ago, another programmer wrote an excellent subroutine to deal CARDS, it would make sense to reuse that logic.
通过实例介绍数控铣削加工编程中常用的子程序、宏程序、代码段调用等方面的内容。
Applications of common subprograms, macroprograms and code transferring in numerical control milling programming are exemplified in this article.
通过实例介绍数控铣削加工编程中常用的子程序、宏程序、代码段调用等方面的内容。
Applications of common subprograms, macroprograms and code transferring in numerical control milling programming are exemplified in this article.
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