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20 In the 1950s, as a fiber trace evidence has begun to be used in criminal investigations , identified the suspect . With the continuous development of science and technology , fiber type, color, thickness has also been extensive development in the frequency of occurrence of various cases are also increasing, in theft, robbery , murder , arson , rape , explosions and other on-site frequently this can be extracted into the fiber trace evidence , these textile fibers from yarn, thread , rope , cloth and other textiles . Through these textile fiber and its products on research , you can play a large role in the investigation of cases , can provide clues to the investigation of cases , thus narrowing the scope of the investigation , in order to prove the criminal provide a strong basis. In recent years , with the introduction of large equipment , new technologies , new methods are emerging as fiber inspection provides a good condition , the fiber has been investigating this case is playing an increasingly important role.

然而，由于较少的纤维纤细，很容易丢失在田野，容易污染周围的环境，所以在法庭上受到了较大的成效，疑虑，证明。例如，在本文中，最常见的入室盗窃，选择了两个网站，三个时间点（1,12,24小时），通过SPSS软件迁移可能会影响纤维的长度，颜色，厚度，类型和其他因素的影响，使正交设计选择两个实验纤维25纤维迁移的研究中可能出现的纤维进行初步勘探领域的迁移，情况可以被确定的帮助的发病播放时间。

However, due to less fiber slim , easily lost in the field , and easily contaminate the surrounding environment , so in court , as evidenced by a greater effectiveness of doubts . In this paper, the most common burglary , for example, selected two sites, three time points ( 1,12,24 hours ) , through SPSS software migration may affect the fiber length, color , thickness , type and other factors , make orthogonal design , select two experimental fiber 25 for fiber migration studies that may occur in the field for the migration of fibers for a preliminary exploration , the case can be determined with the help of incidence play time .
At present, for the study, yet there is no specific national statistical methods in quantitative and qualitative analysis , only China 's Public Security University , Professor Miao Cui-Ying " fiber migration ," Jiang Hong 's " criminal case on the micro -site Validation and application of fiber "and other articles , the migration of the fibers to do the research , but did not use statistical methods to analyze , interpret only the relevant data analysis .

This paper attempts to draw fibers SPSS software mobilities were analyzed to determine which factor in the migration of fibers play a decisive role in determining the occurrence time of the case , to provide clues for the investigation of cases , provide evidence to prove the criminal , resolutely crack down on illegal and criminal activities .

物质交换原理（也称为交换原理洛卡德Locard交换原理的），只要两个对象客体分子引力，静电引力的作用下，这种结合作用的材料的接触表面之间互相接触，会发生交换。

Substance exchange principle ( also called swap principle Lockard Locard Exchange Principle), as long as two objects touch each other between the guest molecule gravity, electrostatic forces , under the effect of such binding action , the contact surface of the material will occur swapping .

Slim short and small. Live mostly in the fiber under mandatory detached from the whole , in line with the overall trace detection princ