Table 1.
Levels of process variables.
| Level | A (rpm) | B (mm) | C (s) |
|---|---|---|---|
| 1 | 200 | 2.7 | 0.1 |
| 2 | 300 | 2.9 | 0.5 |
| 3 | 400 | 3.1 | 0.9 |
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