2021 | 总访问次数
排名 | 国家/地区 | 数量 | 占比 |
1 | China | 17 | 56.7% |
2 | Germany | 7 | 23.3% |
3 | United States | 5 | 16.7% |
4 | Switzerland | 1 | 3.3% |
排名 | 国家/地区 | 数量 | 占比 |
1 | China | 17 | 56.7% |
2 | Germany | 7 | 23.3% |
3 | United States | 5 | 16.7% |
4 | Switzerland | 1 | 3.3% |