2018 | 总访问次数
排名 | 国家/地区 | 数量 | 占比 |
1 | China | 19 | 29.2% |
2 | United States | 19 | 29.2% |
3 | Germany | 14 | 21.5% |
4 | Norway | 4 | 6.2% |
5 | Republic of Korea | 3 | 4.6% |
6 | Romania | 3 | 4.6% |
7 | Saudi Arabia | 1 | 1.5% |
8 | Malaysia | 1 | 1.5% |
9 | Australia | 1 | 1.5% |