文章简述了电视机场扫描电路的组成和工作原理，在此基础上分析了电视机场扫描电路的检修方法及其常见故障的维修，并给出了具体的维修实例。
This paper briefly states the composition of TV field scanning circuit and its working principles, on which the common breakdowns and how to repair are analyzed and some examples are given.
对SHW190焊机的常见故障进行了详细的分析，并讲述了具体的检修和维护方法。
The common failure of SHW190 series welding machine is analyzed in detail, also the troubleshooting and solutions is put.
介绍汽车电动风扇的控制原理和结构特点，分析一般常见故障的检修方法。
This paper introduces the control principles and the structural specialities of the auto electric fan and the inspection ways of its common faults.
分析可燃气体检测报警系统的组成和检修方法，并列举了根据故障现象进行分析和检修的实例。
This paper analyzes the composing of the testing and warning system of combustible gases and method of overhaul, and gives examples of analysis and overhaul on the grounds of phenomenon of breakdown.
并采用了基于可靠性理论的故障树思想对设备故障情况进行分析和判断，在设备状态检修的方式方法上采用了BP神经网络进行设备的故障状态诊断。
And based on the reliability theory, we use the fault tree to analyse and determine the equipment condition, and use BP neural network to diagnose equipment in condition-based maintenance.
并采用了基于可靠性理论的故障树思想对设备故障情况进行分析和判断，在设备状态检修的方式方法上采用了BP神经网络进行设备的故障状态诊断。
And based on the reliability theory, we use the fault tree to analyse and determine the equipment condition, and use BP neural network to diagnose equipment in condition-based maintenance.
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