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 457 50.7%
2 United States 164 18.2%
3 Netherlands 149 16.5%
4 Germany 39 4.3%
5 Russia 22 2.4%
6 Hong Kong 15 1.7%
7 Canada 15 1.7%
8 France 13 1.4%
9 Czech Republic 5 0.6%
10 India 4 0.4%
11 Sweden 3 0.3%
12 United Kingdom 3 0.3%
13 Korea, Republic of 2 0.2%
14 Taiwan 2 0.2%
15 Serbia 2 0.2%
16 Iran, Islamic Republic of 2 0.2%
17 Viet Nam 2 0.2%
18 Japan 1 0.1%
19 Uzbekistan 1 0.1%