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 43 27.9%
2 United States 33 21.4%
3 Russia 17 11%
4 Denmark 15 9.7%
5 Netherlands 14 9.1%
6 Germany 9 5.8%
7 Hungary 5 3.2%
8 Iran, Islamic Republic of 3 1.9%
9 Japan 3 1.9%
10 United Kingdom 3 1.9%
11 Canada 2 1.3%
12 Spain 2 1.3%
13 Moldova, Republic of 2 1.3%
14 France 2 1.3%
15 Hong Kong 1 0.6%