|   成份  |       初始特征值  |       提取平方和载入  |    ||||
|   特征值  |       贡献率%  |       累积%  |       特征值  |       贡献率%  |       累积%  |    |
|   1  |       5.664  |       28.318  |       28.318  |       5.664  |       28.318  |       28.318  |    
|   2  |       2.061  |       10.305  |       38.623  |       2.061  |       10.305  |       38.623  |    
|   3  |       1.692  |       8.459  |       47.082  |       1.692  |       8.459  |       47.082  |