2021 | 总访问次数
排名 | 国家/地区 | 数量 | 占比 |
1 | China | 30 | 78.9% |
2 | United States | 4 | 10.5% |
3 | Germany | 3 | 7.9% |
4 | Korea, Republic of | 1 | 2.6% |
排名 | 国家/地区 | 数量 | 占比 |
1 | China | 30 | 78.9% |
2 | United States | 4 | 10.5% |
3 | Germany | 3 | 7.9% |
4 | Korea, Republic of | 1 | 2.6% |