2018 | 总访问次数
排名 | 国家/地区 | 数量 | 占比 |
1 | United States | 11 | 50% |
2 | Germany | 7 | 31.8% |
3 | China | 3 | 13.6% |
4 | Republic of Korea | 1 | 4.5% |
排名 | 国家/地区 | 数量 | 占比 |
1 | United States | 11 | 50% |
2 | Germany | 7 | 31.8% |
3 | China | 3 | 13.6% |
4 | Republic of Korea | 1 | 4.5% |