1981年8月11日夜,沈阳市苏家屯区发生一起爆炸杀人案,吴家母子二人被炸伤。文检人员在现场提取了4张墨笔书写的大字报、4张日历纸、1张圆珠笔书写的纸条。其上的文字是具备鉴定价值的仅有罪证。为此,我们对大字报文字进行研究分析,认为作案分子的文化水平及书写熟练程度较低,除语言不通顺外,还有部分习惯性错别 On the night of August 11, 1981, an explosion and murder occurred in Sujiatun District of Shenyang City. Wu and his mother and two were injured in the blast. Inspectors at the scene extracted four pens written in the poster, four calendar paper, a ballpoint pen to write the note. The text on it is the only evidence of the value of identification. To this end, we carry out research and analysis on the characters of the Chinese characters, that the level of sophistication and proficiency of writers is low, in addition to the language is not smooth, there are some custom mistakes