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 54 39.7%
2 United States 23 16.9%
3 Germany 14 10.3%
4 Singapore 11 8.1%
5 Hong Kong 9 6.6%
6 Portugal 5 3.7%
7 Taiwan 3 2.2%
8 Senegal 3 2.2%
9 3 2.2%
10 Canada 3 2.2%
11 France 2 1.5%
12 Italy 2 1.5%
13 Japan 2 1.5%
14 United Kingdom 1 0.7%
15 Russia 1 0.7%