BPG致力于知识的发现和传播
Total Visits of This Article
2021 | 总访问次数
排名 国家/地区 数量 占比
1 China 167 53%
2 United States 72 22.9%
3 Germany 25 7.9%
4 Canada 16 5.1%
5 Hong Kong 8 2.5%
6 Taiwan 6 1.9%
7 Netherlands 5 1.6%
8 Russia 3 1%
9 Romania 2 0.6%
10 United Kingdom 2 0.6%
11 Japan 2 0.6%
12 Latvia 2 0.6%
13 Georgia 2 0.6%
14 Brazil 1 0.3%
15 Tajikistan 1 0.3%
16 Sweden 1 0.3%