2018 | 总访问次数
排名 | 国家/地区 | 数量 | 占比 |
1 | Germany | 15 | 39.5% |
2 | China | 14 | 36.8% |
3 | United States | 8 | 21.1% |
4 | Republic of Korea | 1 | 2.6% |
排名 | 国家/地区 | 数量 | 占比 |
1 | Germany | 15 | 39.5% |
2 | China | 14 | 36.8% |
3 | United States | 8 | 21.1% |
4 | Republic of Korea | 1 | 2.6% |