BPG致力于知识的发现和传播
Total Visits of This Article
2020 | 总访问次数
排名 国家/地区 数量 占比
1 United States 23 35.9%
2 China 12 18.8%
3 Iran, Islamic Republic of 4 6.2%
4 Canada 4 6.2%
5 Serbia 4 6.2%
6 Japan 3 4.7%
7 Czech Republic 2 3.1%
8 Bangladesh 2 3.1%
9 Brazil 2 3.1%
10 Romania 2 3.1%
11 Russia 2 3.1%
12 Singapore 1 1.6%
13 Australia 1 1.6%
14 Hong Kong 1 1.6%
15 Mexico 1 1.6%