2018 | 总访问次数
排名 | 国家/地区 | 数量 | 占比 |
1 | United States | 19 | 40.4% |
2 | Germany | 13 | 27.7% |
3 | China | 9 | 19.1% |
4 | Netherlands | 3 | 6.4% |
5 | Republic of Korea | 3 | 6.4% |
排名 | 国家/地区 | 数量 | 占比 |
1 | United States | 19 | 40.4% |
2 | Germany | 13 | 27.7% |
3 | China | 9 | 19.1% |
4 | Netherlands | 3 | 6.4% |
5 | Republic of Korea | 3 | 6.4% |