2021 | 总访问次数
排名 | 国家/地区 | 数量 | 占比 |
1 | China | 18 | 46.2% |
2 | United States | 9 | 23.1% |
3 | Germany | 7 | 17.9% |
4 | Korea, Republic of | 4 | 10.3% |
5 | Netherlands | 1 | 2.6% |
排名 | 国家/地区 | 数量 | 占比 |
1 | China | 18 | 46.2% |
2 | United States | 9 | 23.1% |
3 | Germany | 7 | 17.9% |
4 | Korea, Republic of | 4 | 10.3% |
5 | Netherlands | 1 | 2.6% |