2018 | 总访问次数
排名 | 国家/地区 | 数量 | 占比 |
1 | China | 18 | 32.1% |
2 | United States | 17 | 30.4% |
3 | Germany | 13 | 23.2% |
4 | India | 3 | 5.4% |
5 | Japan | 1 | 1.8% |
6 | Korea, Republic of | 1 | 1.8% |
7 | Netherlands | 1 | 1.8% |
8 | Taiwan | 1 | 1.8% |
9 | United Kingdom | 1 | 1.8% |