2018 | 总访问次数
排名 | 国家/地区 | 数量 | 占比 |
1 | United States | 16 | 43.2% |
2 | Germany | 14 | 37.8% |
3 | China | 6 | 16.2% |
4 | Korea, Republic of | 1 | 2.7% |
排名 | 国家/地区 | 数量 | 占比 |
1 | United States | 16 | 43.2% |
2 | Germany | 14 | 37.8% |
3 | China | 6 | 16.2% |
4 | Korea, Republic of | 1 | 2.7% |