2018 | 总访问次数
排名 | 国家/地区 | 数量 | 占比 |
1 | China | 23 | 48.9% |
2 | United States | 12 | 25.5% |
3 | Germany | 10 | 21.3% |
4 | Republic of Korea | 2 | 4.3% |
排名 | 国家/地区 | 数量 | 占比 |
1 | China | 23 | 48.9% |
2 | United States | 12 | 25.5% |
3 | Germany | 10 | 21.3% |
4 | Republic of Korea | 2 | 4.3% |