2017 | 总访问次数
排名 | 国家/地区 | 数量 | 占比 |
1 | Germany | 16 | 59.3% |
2 | United States | 6 | 22.2% |
3 | Iran, Islamic Republic of | 3 | 11.1% |
4 | China | 2 | 7.4% |
排名 | 国家/地区 | 数量 | 占比 |
1 | Germany | 16 | 59.3% |
2 | United States | 6 | 22.2% |
3 | Iran, Islamic Republic of | 3 | 11.1% |
4 | China | 2 | 7.4% |