2021 | 总访问次数
排名 | 国家/地区 | 数量 | 占比 |
1 | China | 19 | 44.2% |
2 | Iran, Islamic Republic of | 9 | 20.9% |
3 | Germany | 8 | 18.6% |
4 | Netherlands | 3 | 7% |
5 | United States | 3 | 7% |
6 | Russia | 1 | 2.3% |
排名 | 国家/地区 | 数量 | 占比 |
1 | China | 19 | 44.2% |
2 | Iran, Islamic Republic of | 9 | 20.9% |
3 | Germany | 8 | 18.6% |
4 | Netherlands | 3 | 7% |
5 | United States | 3 | 7% |
6 | Russia | 1 | 2.3% |