2021 | 总访问次数
排名 | 国家/地区 | 数量 | 占比 |
1 | China | 21 | 61.8% |
2 | Germany | 9 | 26.5% |
3 | Switzerland | 2 | 5.9% |
4 | United States | 2 | 5.9% |
排名 | 国家/地区 | 数量 | 占比 |
1 | China | 21 | 61.8% |
2 | Germany | 9 | 26.5% |
3 | Switzerland | 2 | 5.9% |
4 | United States | 2 | 5.9% |