| from better quality materials | 3 | other |
| according to processes | 3 | other |
| by mixing iron powders | 3 | manner |
| membrane → be → produced | 25 |
| membrane → be → synthesized | 6 |
| negative | neutral | positive |
| 0.080 | 0.774 | 0.146 |
| Raw frequency | 31 |
| Normalized frequency | 0.442 |
| Modifier score | 0.750 |
| Perplexity | 308.850 |