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 52 31.5%
2 China 46 27.9%
3 Germany 17 10.3%
4 Hong Kong 9 5.5%
5 Taiwan 7 4.2%
6 Portugal 6 3.6%
7 Canada 6 3.6%
8 United Kingdom 5 3%
9 Senegal 3 1.8%
10 3 1.8%
11 Bangladesh 2 1.2%
12 Brazil 2 1.2%
13 Pakistan 2 1.2%
14 Czech Republic 2 1.2%
15 France 1 0.6%
16 Algeria 1 0.6%
17 Russia 1 0.6%