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 308 71.1%
2 United States 48 11.1%
3 Germany 40 9.2%
4 Netherlands 17 3.9%
5 Canada 3 0.7%
6 Russia 3 0.7%
7 Singapore 3 0.7%
8 Sweden 2 0.5%
9 Taiwan 2 0.5%
10 United Kingdom 2 0.5%
11 Norway 1 0.2%
12 Latvia 1 0.2%
13 France 1 0.2%
14 1 0.2%
15 Brazil 1 0.2%