2018 | 总访问次数
排名 | 国家/地区 | 数量 | 占比 |
1 | United States | 18 | 43.9% |
2 | Germany | 12 | 29.3% |
3 | China | 5 | 12.2% |
4 | Netherlands | 3 | 7.3% |
5 | Republic of Korea | 2 | 4.9% |
6 | Iran, Islamic Republic of | 1 | 2.4% |
排名 | 国家/地区 | 数量 | 占比 |
1 | United States | 18 | 43.9% |
2 | Germany | 12 | 29.3% |
3 | China | 5 | 12.2% |
4 | Netherlands | 3 | 7.3% |
5 | Republic of Korea | 2 | 4.9% |
6 | Iran, Islamic Republic of | 1 | 2.4% |