| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| natural frequency control system | 1.82 | 0.6 | 620 | 22 | 32 |
| natural | 1 | 0.9 | 9566 | 64 | 7 |
| frequency | 0.61 | 0.1 | 4933 | 64 | 9 |
| control | 0.16 | 0.9 | 9212 | 76 | 7 |
| system | 0.5 | 0.2 | 3108 | 93 | 6 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| natural frequency control system | 0.69 | 0.8 | 8030 | 16 |
