2021 | 总访问次数
排名 | 国家/地区 | 数量 | 占比 |
1 | China | 13 | 54.2% |
2 | United States | 7 | 29.2% |
3 | Germany | 2 | 8.3% |
4 | Switzerland | 2 | 8.3% |
排名 | 国家/地区 | 数量 | 占比 |
1 | China | 13 | 54.2% |
2 | United States | 7 | 29.2% |
3 | Germany | 2 | 8.3% |
4 | Switzerland | 2 | 8.3% |