2021 | 总访问次数
排名 | 国家/地区 | 数量 | 占比 |
1 | China | 23 | 60.5% |
2 | Germany | 8 | 21.1% |
3 | United States | 5 | 13.2% |
4 | Switzerland | 2 | 5.3% |
排名 | 国家/地区 | 数量 | 占比 |
1 | China | 23 | 60.5% |
2 | Germany | 8 | 21.1% |
3 | United States | 5 | 13.2% |
4 | Switzerland | 2 | 5.3% |