2018 | 总访问次数
排名 | 国家/地区 | 数量 | 占比 |
1 | United States | 16 | 39% |
2 | China | 13 | 31.7% |
3 | Germany | 10 | 24.4% |
4 | Republic of Korea | 2 | 4.9% |
排名 | 国家/地区 | 数量 | 占比 |
1 | United States | 16 | 39% |
2 | China | 13 | 31.7% |
3 | Germany | 10 | 24.4% |
4 | Republic of Korea | 2 | 4.9% |