2018 | 总访问次数
排名 | 国家/地区 | 数量 | 占比 |
1 | China | 16 | 51.6% |
2 | United States | 10 | 32.3% |
3 | Germany | 3 | 9.7% |
4 | Republic of Korea | 2 | 6.5% |
排名 | 国家/地区 | 数量 | 占比 |
1 | China | 16 | 51.6% |
2 | United States | 10 | 32.3% |
3 | Germany | 3 | 9.7% |
4 | Republic of Korea | 2 | 6.5% |