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 127 38.5%
2 United States 105 31.8%
3 Germany 30 9.1%
4 Korea, Republic of 20 6.1%
5 Netherlands 10 3%
6 Senegal 10 3%
7 France 7 2.1%
8 Russia 6 1.8%
9 Greece 4 1.2%
10 Norway 2 0.6%
11 Luxembourg 2 0.6%
12 Malaysia 2 0.6%
13 Philippines 1 0.3%
14 India 1 0.3%
15 Sweden 1 0.3%
16 Switzerland 1 0.3%
17 United Kingdom 1 0.3%