中文摘要：

用Perl语言编写了一个脚本--ChooseMaterials．pl，通过计算两个材料特定某几列数据之间增加或减少的百分数水平，达到控制变量突出关键因子的作用，方便生物学工作者选取材料，做进一步的实验或分析。

英文摘要：

A perl script ChooseMaterials. pl was written for picking the choose samples by calculate the percentage of the increased or decreased level at pair： subtraction of two samples divided by means of two values at pair. It a- chieves controlling variable and outstanding key factors effects, and convenient for picking the choose samples by investigators to further experimental or analysis.