说明： 系统地介绍声发射信号简化波形特征参数的定义和分析方法，包括列表显示和分析、
单参数分析、经所图分析、分布图分析和关联图分析等. (Systematic introduction of AE signal waveform characteristics to simplify the definition of parameters and analysis methods, including a list of display and analysis of single parameter analysis, by the analysis, distribution analysis and incidence graph analysis.)
