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 37 30.6%
2 China 36 29.8%
3 Germany 14 11.6%
4 Canada 7 5.8%
5 Hong Kong 5 4.1%
6 Portugal 5 4.1%
7 4 3.3%
8 Senegal 3 2.5%
9 Taiwan 2 1.7%
10 Russia 2 1.7%
11 New Zealand 2 1.7%
12 Australia 1 0.8%
13 France 1 0.8%
14 United Kingdom 1 0.8%
15 Sweden 1 0.8%