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 262 28.7%
2 United States 210 23%
3 China 200 21.9%
4 Germany 129 14.1%
5 Canada 92 10.1%
6 Iran, Islamic Republic of 6 0.7%
7 United Kingdom 4 0.4%
8 Turkey 2 0.2%
9 Singapore 2 0.2%
10 Hong Kong 2 0.2%
11 France 2 0.2%
12 Taiwan 1 0.1%
13 Ukraine 1 0.1%