2021 | 总访问次数
排名 | 国家/地区 | 数量 | 占比 |
1 | China | 16 | 69.6% |
2 | Germany | 5 | 21.7% |
3 | Switzerland | 1 | 4.3% |
4 | United States | 1 | 4.3% |
排名 | 国家/地区 | 数量 | 占比 |
1 | China | 16 | 69.6% |
2 | Germany | 5 | 21.7% |
3 | Switzerland | 1 | 4.3% |
4 | United States | 1 | 4.3% |