2017 | 总访问次数
排名 | 国家/地区 | 数量 | 占比 |
1 | Germany | 15 | 42.9% |
2 | China | 11 | 31.4% |
3 | United States | 6 | 17.1% |
4 | Korea, Republic of | 3 | 8.6% |
排名 | 国家/地区 | 数量 | 占比 |
1 | Germany | 15 | 42.9% |
2 | China | 11 | 31.4% |
3 | United States | 6 | 17.1% |
4 | Korea, Republic of | 3 | 8.6% |