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 United States 267 35%
2 China 225 29.5%
3 Germany 64 8.4%
4 Netherlands 63 8.3%
5 Sweden 54 7.1%
6 Korea, Republic of 22 2.9%
7 Cote D'ivoire 11 1.4%
8 Thailand 9 1.2%
9 Russia 6 0.8%
10 France 6 0.8%
11 Norway 4 0.5%
12 United Kingdom 3 0.4%
13 Canada 3 0.4%
14 Brazil 2 0.3%
15 Kenya 2 0.3%
16 Malaysia 2 0.3%
17 Hong Kong 2 0.3%
18 India 2 0.3%
19 Israel 2 0.3%
20 Philippines 2 0.3%
21 Romania 2 0.3%
22 Singapore 2 0.3%
23 Switzerland 2 0.3%
24 Italy 1 0.1%
25 Lithuania 1 0.1%
26 Australia 1 0.1%
27 Finland 1 0.1%
28 Ghana 1 0.1%