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 634 48.2%
2 United States 369 28.1%
3 Netherlands 66 5%
4 Germany 59 4.5%
5 Hong Kong 35 2.7%
6 Canada 32 2.4%
7 Taiwan 20 1.5%
8 France 18 1.4%
9 Korea, Republic of 15 1.1%
10 Russia 9 0.7%
11 Senegal 7 0.5%
12 United Kingdom 6 0.5%
13 Finland 6 0.5%
14 Japan 5 0.4%
15 India 5 0.4%
16 Malaysia 4 0.3%
17 Cote D'ivoire 4 0.3%
18 Ukraine 4 0.3%
19 Switzerland 2 0.2%
20 Turkey 2 0.2%
21 Australia 2 0.2%
22 Hungary 2 0.2%
23 Italy 1 0.1%
24 Brazil 1 0.1%
25 Bulgaria 1 0.1%
26 Burkina Faso 1 0.1%
27 Denmark 1 0.1%
28 Singapore 1 0.1%
29 North Macedonia 1 0.1%
30 Norway 1 0.1%
31 Romania 1 0.1%