2018 | 总访问次数
排名 | 国家/地区 | 数量 | 占比 |
1 | United States | 22 | 44% |
2 | Germany | 15 | 30% |
3 | China | 6 | 12% |
4 | Netherlands | 4 | 8% |
5 | 2 | 4% | |
6 | Republic of Korea | 1 | 2% |
排名 | 国家/地区 | 数量 | 占比 |
1 | United States | 22 | 44% |
2 | Germany | 15 | 30% |
3 | China | 6 | 12% |
4 | Netherlands | 4 | 8% |
5 | 2 | 4% | |
6 | Republic of Korea | 1 | 2% |