loop program meaning in English

环周程式
循环程序

In irb , the interpreter for ruby , i load the loop program and call it with the code
我在ruby的解释程序irb中载入了一个循环程序，并通过代码调用它：
Chapter four discussed the software design of control system in detail , including main program , closed loop program and interrupted subprogram , and study the program of the torque control soft - start emphatically
第四章中，详细介绍了控制系统的软件设计，包括主程序，闭环计算程序和中断服务子程序等的设计与流程，并着重介绍了转矩起动软件实现方法。