2021 | 总访问次数
排名 | 国家/地区 | 数量 | 占比 |
1 | China | 15 | 40.5% |
2 | United States | 13 | 35.1% |
3 | Germany | 7 | 18.9% |
4 | Netherlands | 2 | 5.4% |
排名 | 国家/地区 | 数量 | 占比 |
1 | China | 15 | 40.5% |
2 | United States | 13 | 35.1% |
3 | Germany | 7 | 18.9% |
4 | Netherlands | 2 | 5.4% |