BPG致力于知识的发现和传播
Total Visits of This Article
2021 | 总访问次数
排名 国家/地区 数量 占比
1 United States 93 48.4%
2 China 41 21.4%
3 Germany 19 9.9%
4 Sweden 11 5.7%
5 France 6 3.1%
6 Norway 5 2.6%
7 Russia 3 1.6%
8 Canada 3 1.6%
9 Czech Republic 2 1%
10 Denmark 2 1%
11 Japan 2 1%
12 Taiwan 2 1%
13 Singapore 1 0.5%
14 Ireland 1 0.5%
15 Belgium 1 0.5%