子例行程序调用 sub-routine call

递归子例行程序 recursive subroutine

可重用子例行程序 reusable subroutine

商用子例行程序包 Commercial Subroutine Package

汇编语言子例行程序 assembly language subroutine

数学子程序库例行程序 [计] mathematical subroutine library routine