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 31 38.8%
2 China 22 27.5%
3 Germany 5 6.2%
4 India 4 5%
5 Taiwan 4 5%
6 Hong Kong 3 3.8%
7 Russia 2 2.5%
8 Iran, Islamic Republic of 2 2.5%
9 Ireland 2 2.5%
10 Portugal 1 1.2%
11 Spain 1 1.2%
12 Sweden 1 1.2%
13 United Kingdom 1 1.2%
14 Burkina Faso 1 1.2%