To transfer control of a digital computer temporarily from a main routine to a subroutine , which is inserted in the sequence of calculating operations to fulfill a subsidiary purpose 把计算机的控制暂时从主程序转移到子程序以完成辅助性工作的过程。该子程序嵌入在计算操作序列中。
Three kinds of calculating operation for the bulldozer are given the finite element calculating models are founded . the static construction strength analyzes are proceeded to the frame of ty220 bulldozer . the dangerous area and its position are found out 给出了推土机三种计算工况,建立了推土机台车架有限元计算模型,对ty220推土机台车架进行了静态结构强度分析,找出了危险区域和部位。