BPG致力于知识的发现和传播
Total Visits of This Article
2020 | 总访问次数
排名 国家/地区 数量 占比
1 United States 37 35.2%
2 Germany 27 25.7%
3 China 10 9.5%
4 Netherlands 8 7.6%
5 United Kingdom 7 6.7%
6 France 4 3.8%
7 Hong Kong 4 3.8%
8 India 3 2.9%
9 Russia 2 1.9%
10 Korea, Republic of 1 1%
11 Brazil 1 1%
12 Estonia 1 1%