BPG致力于知识的发现和传播
Total Visits of This Article
2018 | 总访问次数
排名 国家/地区 数量 占比
1 United States 38 37.6%
2 China 30 29.7%
3 Germany 13 12.9%
4 Japan 4 4%
5 Netherlands 4 4%
6 Finland 3 3%
7 Hong Kong 2 2%
8 India 1 1%
9 Ireland 1 1%
10 Serbia 1 1%
11 Taiwan 1 1%
12 Ukraine 1 1%
13 United Kingdom 1 1%
14 Canada 1 1%