2018 | 总访问次数
排名 | 国家/地区 | 数量 | 占比 |
1 | China | 18 | 36% |
2 | United States | 17 | 34% |
3 | Germany | 9 | 18% |
4 | Netherlands | 5 | 10% |
5 | Korea, Republic of | 1 | 2% |
排名 | 国家/地区 | 数量 | 占比 |
1 | China | 18 | 36% |
2 | United States | 17 | 34% |
3 | Germany | 9 | 18% |
4 | Netherlands | 5 | 10% |
5 | Korea, Republic of | 1 | 2% |