The hair lines of 45 steel drivingaxle when quenching and tempering was analysed by heat etching, chemical analysis and metallographic.
本文采用热酸浸蚀试验，化学成份分析和金相分析等手段，对45钢轴所出现的发纹进行分析。
2
By analysing the mathematical model and the design process of drivingaxle, the search algorithm and the parameter update algorithm are given in this dissertation.
文中还通过对参数约束数学模型的分析并结合驱动桥工程化设计过程，设计出搜索算法和参数更新算法。
3
Chapter three does a research on two class classifier problem of fault diagnosis for drivingaxle.