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 37 33.3%
2 United States 34 30.6%
3 Norway 7 6.3%
4 Netherlands 6 5.4%
5 France 5 4.5%
6 Sweden 4 3.6%
7 Russia 3 2.7%
8 Germany 3 2.7%
9 Hong Kong 3 2.7%
10 Bulgaria 3 2.7%
11 Finland 2 1.8%
12 Switzerland 2 1.8%
13 Ireland 1 0.9%
14 Japan 1 0.9%