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 41 32.8%
2 China 21 16.8%
3 Netherlands 17 13.6%
4 Denmark 16 12.8%
5 Germany 9 7.2%
6 Spain 5 4%
7 United Kingdom 3 2.4%
8 Colombia 3 2.4%
9 France 2 1.6%
10 Greece 2 1.6%
11 Mexico 2 1.6%
12 Peru 2 1.6%
13 Canada 1 0.8%
14 Japan 1 0.8%