1故障性质分析农业机械液压系统故障具有故障点隐蔽、因果关系复杂、易受随机性因素影响和失效分布较分散等特点,故障诊断的难度较大。其故障一般按照性质分为突发性 1 Analysis of the nature of the fault Hydraulic machinery system fault with hidden points of failure, causal relationship is complicated, susceptible to random factors and more scattered distribution of failure characteristics, fault diagnosis more difficult. The fault is generally divided into sudden nature