2018 | 总访问次数
排名 | 国家/地区 | 数量 | 占比 |
1 | United States | 30 | 65.2% |
2 | Germany | 10 | 21.7% |
3 | China | 5 | 10.9% |
4 | Korea, Republic of | 1 | 2.2% |
排名 | 国家/地区 | 数量 | 占比 |
1 | United States | 30 | 65.2% |
2 | Germany | 10 | 21.7% |
3 | China | 5 | 10.9% |
4 | Korea, Republic of | 1 | 2.2% |