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 68 40.5%
2 United States 40 23.8%
3 Germany 15 8.9%
4 Netherlands 15 8.9%
5 Taiwan 8 4.8%
6 Hong Kong 6 3.6%
7 Portugal 5 3%
8 Canada 2 1.2%
9 Senegal 2 1.2%
10 Sweden 1 0.6%
11 1 0.6%
12 Ukraine 1 0.6%
13 United Kingdom 1 0.6%
14 Romania 1 0.6%
15 Russia 1 0.6%
16 Japan 1 0.6%