Then , the thesis designs a program model of mechanical fault diagnosis neural network learning and diagnosis , and uses turbo c2 . 0 to achieve the total course of fault diagonisis on the gearbox in j ? 0 tractor based on ann theory 再次,本文设计了机械故障诊断神经网络学习和诊断程序模块,并利用turboc2 . 0编写了程序,实现了基于人工神经网络理论的集材- 50拖拉机变速箱故障诊断的全过程。