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 77 57.5%
2 United States 18 13.4%
3 Germany 8 6%
4 Hong Kong 7 5.2%
5 Spain 7 5.2%
6 Portugal 6 4.5%
7 3 2.2%
8 Senegal 3 2.2%
9 Sweden 1 0.7%
10 United Kingdom 1 0.7%
11 Canada 1 0.7%
12 Russia 1 0.7%
13 Korea, Republic of 1 0.7%