| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| zhang heng zheng shuang | 1.31 | 0.4 | 2844 | 76 | 23 |
| zhang | 0.42 | 0.1 | 7686 | 19 | 5 |
| heng | 1.79 | 1 | 6107 | 16 | 4 |
| zheng | 0.66 | 0.8 | 880 | 9 | 5 |
| shuang | 0.72 | 1 | 7219 | 68 | 6 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| zhang heng zheng shuang | 1.86 | 0.1 | 8241 | 49 |
| zhang heng and zheng shuang | 0.96 | 0.1 | 6561 | 8 |
| zheng shuang and zhang han | 1.05 | 0.2 | 3151 | 64 |
| who was zhang heng | 0.13 | 0.9 | 6649 | 3 |
| facts about zhang heng | 1.77 | 0.1 | 1411 | 6 |
| shuang zhang hong kong university | 1.84 | 0.9 | 532 | 25 |
| who is zheng heng | 0.36 | 0.3 | 8671 | 44 |
| what was zhang heng famous for | 1.33 | 1 | 7342 | 86 |
| zheng zhang google scholar | 0.81 | 0.8 | 5791 | 52 |
| heng zhang arizona state university | 1.83 | 0.5 | 9511 | 48 |
| yang yang and zheng shuang | 0.37 | 1 | 1861 | 53 |
| chinese actress zheng shuang | 1.35 | 0.1 | 4561 | 59 |
| when was zhang heng born | 0.2 | 0.7 | 3928 | 44 |
| why did zhang heng do mathematics | 1.23 | 0.1 | 266 | 46 |
| meng'er zhang shang chi | 1.31 | 0.4 | 8785 | 11 |
| when did zhang heng die | 1.23 | 0.7 | 9214 | 23 |
| shuang cheng zhi zhan | 0.04 | 0.7 | 8502 | 94 |
| zhang shang ming zhu | 1.33 | 1 | 2038 | 53 |
| where is zheng shuang now | 0.14 | 0.3 | 330 | 98 |
| what is zheng he | 1.62 | 0.1 | 2307 | 4 |
| xin henry zhang google scholar | 0.29 | 0.9 | 4195 | 39 |
| j. zhang | 1.41 | 0.9 | 225 | 65 |
| zhe zhang peking university | 0.89 | 0.6 | 9744 | 48 |
