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 46 26.7%
2 China 32 18.6%
3 Germany 30 17.4%
4 Russia 21 12.2%
5 Netherlands 16 9.3%
6 Sweden 14 8.1%
7 Canada 3 1.7%
8 Iran, Islamic Republic of 3 1.7%
9 Colombia 2 1.2%
10 France 2 1.2%
11 Hong Kong 1 0.6%
12 India 1 0.6%
13 Indonesia 1 0.6%