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 80 49.7%
2 United States 30 18.6%
3 Germany 16 9.9%
4 Netherlands 9 5.6%
5 Portugal 5 3.1%
6 Hong Kong 5 3.1%
7 Taiwan 4 2.5%
8 Senegal 3 1.9%
9 United Kingdom 2 1.2%
10 Mongolia 2 1.2%
11 Russia 2 1.2%
12 Sao Tome and Principe 1 0.6%
13 Malaysia 1 0.6%
14 1 0.6%