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 129 35.7%
2 United States 123 34.1%
3 Netherlands 38 10.5%
4 Germany 28 7.8%
5 Russia 15 4.2%
6 Korea, Republic of 11 3%
7 France 3 0.8%
8 Norway 3 0.8%
9 Senegal 2 0.6%
10 Brazil 2 0.6%
11 Bulgaria 1 0.3%
12 Canada 1 0.3%
13 Dominican Republic 1 0.3%
14 Ireland 1 0.3%
15 Sweden 1 0.3%
16 Switzerland 1 0.3%
17 Romania 1 0.3%