2021 | 总访问次数
排名 | 国家/地区 | 数量 | 占比 |
1 | China | 41 | 41% |
2 | United States | 19 | 19% |
3 | Germany | 8 | 8% |
4 | Netherlands | 8 | 8% |
5 | Hong Kong | 5 | 5% |
6 | Norway | 4 | 4% |
7 | Japan | 4 | 4% |
8 | Taiwan | 4 | 4% |
9 | United Kingdom | 2 | 2% |
10 | Poland | 2 | 2% |
11 | Iran, Islamic Republic of | 2 | 2% |
12 | Singapore | 1 | 1% |