2021 | 总访问次数
排名 | 国家/地区 | 数量 | 占比 |
1 | China | 22 | 48.9% |
2 | United States | 9 | 20% |
3 | Germany | 7 | 15.6% |
4 | Korea, Republic of | 5 | 11.1% |
5 | Switzerland | 2 | 4.4% |
排名 | 国家/地区 | 数量 | 占比 |
1 | China | 22 | 48.9% |
2 | United States | 9 | 20% |
3 | Germany | 7 | 15.6% |
4 | Korea, Republic of | 5 | 11.1% |
5 | Switzerland | 2 | 4.4% |