2018 | 总访问次数
排名 | 国家/地区 | 数量 | 占比 |
1 | United States | 30 | 45.5% |
2 | Germany | 13 | 19.7% |
3 | China | 10 | 15.2% |
4 | India | 3 | 4.5% |
5 | Netherlands | 3 | 4.5% |
6 | Taiwan | 2 | 3% |
7 | Korea, Republic of | 2 | 3% |
8 | 1 | 1.5% | |
9 | Republic of Korea | 1 | 1.5% |
10 | Saudi Arabia | 1 | 1.5% |