2021 | 总访问次数
排名 | 国家/地区 | 数量 | 占比 |
1 | United States | 19 | 51.4% |
2 | Germany | 9 | 24.3% |
3 | China | 6 | 16.2% |
4 | Netherlands | 3 | 8.1% |
排名 | 国家/地区 | 数量 | 占比 |
1 | United States | 19 | 51.4% |
2 | Germany | 9 | 24.3% |
3 | China | 6 | 16.2% |
4 | Netherlands | 3 | 8.1% |