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 59 25.9%
2 United States 52 22.8%
3 Germany 37 16.2%
4 Netherlands 17 7.5%
5 Russia 9 3.9%
6 Romania 7 3.1%
7 United Kingdom 7 3.1%
8 India 6 2.6%
9 Brazil 4 1.8%
10 Nigeria 4 1.8%
11 Turkey 4 1.8%
12 Mexico 3 1.3%
13 South Africa 2 0.9%
14 Spain 2 0.9%
15 Italy 2 0.9%
16 Korea, Republic of 2 0.9%
17 Latvia 2 0.9%
18 Australia 2 0.9%
19 Canada 2 0.9%
20 France 2 0.9%
21 Ireland 1 0.4%
22 Bulgaria 1 0.4%
23 Viet Nam 1 0.4%