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 China 67 38.7%
2 United States 39 22.5%
3 Germany 17 9.8%
4 Russia 11 6.4%
5 United Kingdom 9 5.2%
6 France 5 2.9%
7 Taiwan 4 2.3%
8 Singapore 4 2.3%
9 Senegal 3 1.7%
10 Switzerland 2 1.2%
11 Canada 2 1.2%
12 Philippines 2 1.2%
13 Poland 2 1.2%
14 Hong Kong 2 1.2%
15 India 2 1.2%
16 Netherlands 1 0.6%
17 Ukraine 1 0.6%