| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| beijing institute of metrology | 1.93 | 0.4 | 7084 | 77 | 30 |
| beijing | 1.83 | 1 | 3263 | 26 | 7 |
| institute | 1.71 | 0.1 | 4638 | 58 | 9 |
| of | 1.93 | 0.2 | 2796 | 25 | 2 |
| metrology | 1.09 | 0.2 | 6339 | 1 | 9 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| beijing institute of metrology | 1.98 | 0.1 | 4399 | 7 |
