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 84 41.2%
2 United States 49 24%
3 Netherlands 16 7.8%
4 Germany 14 6.9%
5 Korea, Republic of 11 5.4%
6 Russia 10 4.9%
7 France 6 2.9%
8 Denmark 4 2%
9 Switzerland 3 1.5%
10 United Kingdom 2 1%
11 Sweden 2 1%
12 Italy 1 0.5%
13 Norway 1 0.5%
14 Philippines 1 0.5%