2021 | 总访问次数
排名 | 国家/地区 | 数量 | 占比 |
1 | China | 31 | 59.6% |
2 | United States | 10 | 19.2% |
3 | Germany | 8 | 15.4% |
4 | Korea, Republic of | 3 | 5.8% |
排名 | 国家/地区 | 数量 | 占比 |
1 | China | 31 | 59.6% |
2 | United States | 10 | 19.2% |
3 | Germany | 8 | 15.4% |
4 | Korea, Republic of | 3 | 5.8% |