| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| refrigeration system working principle | 0.26 | 0.1 | 900 | 7 | 38 |
| refrigeration | 1.7 | 0.6 | 3924 | 57 | 13 |
| system | 1.61 | 0.1 | 7255 | 85 | 6 |
| working | 0.09 | 0.1 | 6650 | 92 | 7 |
| principle | 1.72 | 0.6 | 2386 | 97 | 9 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| refrigeration system working principle | 0.4 | 0.3 | 9479 | 69 |
