2018 | 总访问次数
排名 | 国家/地区 | 数量 | 占比 |
1 | United States | 17 | 38.6% |
2 | China | 14 | 31.8% |
3 | Germany | 11 | 25% |
4 | Republic of Korea | 2 | 4.5% |
排名 | 国家/地区 | 数量 | 占比 |
1 | United States | 17 | 38.6% |
2 | China | 14 | 31.8% |
3 | Germany | 11 | 25% |
4 | Republic of Korea | 2 | 4.5% |