2021 | 总访问次数
排名 | 国家/地区 | 数量 | 占比 |
1 | China | 32 | 57.1% |
2 | United States | 14 | 25% |
3 | Germany | 8 | 14.3% |
4 | Switzerland | 2 | 3.6% |
排名 | 国家/地区 | 数量 | 占比 |
1 | China | 32 | 57.1% |
2 | United States | 14 | 25% |
3 | Germany | 8 | 14.3% |
4 | Switzerland | 2 | 3.6% |