2018 | 总访问次数
排名 | 国家/地区 | 数量 | 占比 |
1 | Germany | 16 | 43.2% |
2 | China | 9 | 24.3% |
3 | United States | 9 | 24.3% |
4 | Republic of Korea | 3 | 8.1% |
排名 | 国家/地区 | 数量 | 占比 |
1 | Germany | 16 | 43.2% |
2 | China | 9 | 24.3% |
3 | United States | 9 | 24.3% |
4 | Republic of Korea | 3 | 8.1% |