| 试验号 | 原料比(A) | 温度(B)/℃ | 空速(C)/h−1 | N,N-DMA选择性/% |
| 1 | 1 (3.5) | 1 (220) | 1 (0.25) | 84.87 |
| 2 | 1 (3.5) | 2 (230) | 2 (0.50) | 74.86 |
| 3 | 1 (3.5) | 3 (240) | 3 (0.75) | 69.51 |
| 4 | 2 (4.0) | 1 (220) | 3 (0.75) | 77.61 |
| 5 | 2 (4.0) | 2 (230) | 1 (0.25) | 95.57 |
| 6 | 2 (4.0) | 3 (240) | 2 (0.50) | 86.85 |
| 7 | 3 (4.5) | 1 (220) | 2 (0.50) | 83.04 |
| 8 | 3 (4.5) | 2 (230) | 3 (0.75) | 75.77 |
| 9 | 3 (4.5) | 3 (240) | 1 (0.25) | 73.49 |
| K1 | 76.413 | 81.840 | 84.687 |
|
| K2 | 83.387 | 82.110 | 82.250 |
|
| K3 | 77.433 | 77.283 | 74.297 |
|
| R | 10.974 | 4.827 | 10.390 |
|
| 主次顺序 | A > C > B |
| ||
| 优水平 | A2 | B2 | C1 |
|
| 优组合 | A2B2C1 |
| ||