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 Finland 227 28.9%
2 United States 190 24.2%
3 China 143 18.2%
4 Canada 105 13.4%
5 Germany 101 12.9%
6 Iran, Islamic Republic of 5 0.6%
7 Singapore 4 0.5%
8 Hong Kong 3 0.4%
9 Brazil 2 0.3%
10 Japan 2 0.3%
11 United Kingdom 2 0.3%
12 Ireland 1 0.1%