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 57 40.7%
2 Netherlands 27 19.3%
3 China 27 19.3%
4 Iran, Islamic Republic of 5 3.6%
5 Russia 4 2.9%
6 India 4 2.9%
7 Italy 3 2.1%
8 Israel 2 1.4%
9 France 2 1.4%
10 Germany 1 0.7%
11 Hong Kong 1 0.7%
12 Croatia 1 0.7%
13 Bulgaria 1 0.7%
14 Canada 1 0.7%
15 Mexico 1 0.7%
16 Viet Nam 1 0.7%
17 Slovakia 1 0.7%
18 Thailand 1 0.7%