对于abaqus子程序的开发介绍说明，ABAQUS的用户子程序是根据ABAQUS提供的相应接口，按照Fortran语法，用户自己编写的代码。它是一个独立的程序单元，可以独立的被存储和编译，也能被其它程序单元引用。(Introduction to the development of ABAQUS subroutine
The user subroutine of ABAQUS is based on the corresponding interface provided by ABAQUS, and the code written by the user according to Fortran syntax. It is an independent program unit, which can be stored and compiled independently, and can also be referenced by other program units.)