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 Mexico 35 24.3%
2 China 26 18.1%
3 United States 16 11.1%
4 Denmark 15 10.4%
5 Germany 14 9.7%
6 Netherlands 14 9.7%
7 Canada 6 4.2%
8 Iran, Islamic Republic of 4 2.8%
9 France 3 2.1%
10 Japan 2 1.4%
11 Kenya 2 1.4%
12 Spain 2 1.4%
13 Thailand 2 1.4%
14 India 1 0.7%
15 Korea, Republic of 1 0.7%
16 Brazil 1 0.7%