2018 | 总访问次数
排名 | 国家/地区 | 数量 | 占比 |
1 | United States | 18 | 30.5% |
2 | China | 14 | 23.7% |
3 | Germany | 12 | 20.3% |
4 | Netherlands | 4 | 6.8% |
5 | Romania | 3 | 5.1% |
6 | Taiwan | 2 | 3.4% |
7 | Republic of Korea | 2 | 3.4% |
8 | Japan | 2 | 3.4% |
9 | Korea, Republic of | 1 | 1.7% |
10 | Finland | 1 | 1.7% |