2018 | 总访问次数
排名 | 国家/地区 | 数量 | 占比 |
1 | United States | 12 | 38.7% |
2 | Germany | 10 | 32.3% |
3 | China | 7 | 22.6% |
4 | Republic of Korea | 2 | 6.5% |
排名 | 国家/地区 | 数量 | 占比 |
1 | United States | 12 | 38.7% |
2 | Germany | 10 | 32.3% |
3 | China | 7 | 22.6% |
4 | Republic of Korea | 2 | 6.5% |