2021 | 总访问次数
排名 | 国家/地区 | 数量 | 占比 |
1 | China | 50 | 66.7% |
2 | United States | 17 | 22.7% |
3 | Germany | 5 | 6.7% |
4 | Korea, Republic of | 3 | 4% |
排名 | 国家/地区 | 数量 | 占比 |
1 | China | 50 | 66.7% |
2 | United States | 17 | 22.7% |
3 | Germany | 5 | 6.7% |
4 | Korea, Republic of | 3 | 4% |