2021 | 总访问次数
排名 | 国家/地区 | 数量 | 占比 |
1 | China | 16 | 36.4% |
2 | United States | 12 | 27.3% |
3 | Germany | 5 | 11.4% |
4 | Japan | 4 | 9.1% |
5 | Taiwan | 3 | 6.8% |
6 | Moldova, Republic of | 1 | 2.3% |
7 | Netherlands | 1 | 2.3% |
8 | Russia | 1 | 2.3% |
9 | Spain | 1 | 2.3% |