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 103 51.8%
2 China 21 10.6%
3 Germany 19 9.5%
4 France 13 6.5%
5 Russia 7 3.5%
6 India 4 2%
7 Switzerland 4 2%
8 United Kingdom 3 1.5%
9 Mexico 3 1.5%
10 Australia 3 1.5%
11 Canada 2 1%
12 Netherlands 2 1%
13 Poland 2 1%
14 Japan 2 1%
15 Turkey 2 1%
16 Ukraine 2 1%
17 Spain 1 0.5%
18 Sweden 1 0.5%
19 Portugal 1 0.5%
20 Bangladesh 1 0.5%
21 Cuba 1 0.5%
22 Egypt 1 0.5%
23 Estonia 1 0.5%