2021 | 总访问次数
排名 | 国家/地区 | 数量 | 占比 |
1 | China | 21 | 60% |
2 | Germany | 8 | 22.9% |
3 | United States | 3 | 8.6% |
4 | Czech Republic | 3 | 8.6% |
排名 | 国家/地区 | 数量 | 占比 |
1 | China | 21 | 60% |
2 | Germany | 8 | 22.9% |
3 | United States | 3 | 8.6% |
4 | Czech Republic | 3 | 8.6% |