[{"title":"( 3 个子文件 4.93MB ) 逐步回归分析法","children":[{"title":"统计计算论文.docx <span style='color:#111;'> 1.67MB </span>","children":null,"spread":false},{"title":"王贤 统计计算论文.docx <span style='color:#111;'> 1.67MB </span>","children":null,"spread":false},{"title":"逐步回归分析.pptx <span style='color:#111;'> 1.72MB </span>","children":null,"spread":false}],"spread":true}]