2018 | 总访问次数
排名 | 国家/地区 | 数量 | 占比 |
1 | China | 11 | 50% |
2 | United States | 5 | 22.7% |
3 | Germany | 3 | 13.6% |
4 | Republic of Korea | 3 | 13.6% |
排名 | 国家/地区 | 数量 | 占比 |
1 | China | 11 | 50% |
2 | United States | 5 | 22.7% |
3 | Germany | 3 | 13.6% |
4 | Republic of Korea | 3 | 13.6% |