表 5.
正交试验因素水平表
| Level | Extraction pressure/MPa |
Extraction temperature/℃ |
CO2 flow/ (L/h) |
Blank control |
|---|---|---|---|---|
| 1 | 18 | 30 | 27 | 1 |
| 2 | 23 | 35 | 30 | 2 |
| 3 | 28 | 40 | 32 | 3 |
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