2018 | 总访问次数
排名 | 国家/地区 | 数量 | 占比 |
1 | United States | 14 | 48.3% |
2 | Germany | 9 | 31% |
3 | China | 4 | 13.8% |
4 | Republic of Korea | 2 | 6.9% |
排名 | 国家/地区 | 数量 | 占比 |
1 | United States | 14 | 48.3% |
2 | Germany | 9 | 31% |
3 | China | 4 | 13.8% |
4 | Republic of Korea | 2 | 6.9% |