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 417 39.8%
2 United States 329 31.4%
3 Netherlands 119 11.3%
4 Germany 79 7.5%
5 Sweden 15 1.4%
6 Korea, Republic of 13 1.2%
7 Canada 11 1%
8 Japan 9 0.9%
9 Taiwan 9 0.9%
10 Hong Kong 8 0.8%
11 India 8 0.8%
12 France 7 0.7%
13 Cote D'ivoire 6 0.6%
14 Philippines 4 0.4%
15 Romania 2 0.2%
16 Serbia 2 0.2%
17 Australia 2 0.2%
18 United Kingdom 2 0.2%
19 Switzerland 2 0.2%
20 Brazil 1 0.1%
21 Estonia 1 0.1%
22 Malaysia 1 0.1%
23 Moldova, Republic of 1 0.1%
24 Russia 1 0.1%