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 460 35.1%
2 United States 310 23.6%
3 China 208 15.9%
4 Germany 156 11.9%
5 Canada 128 9.8%
6 Netherlands 26 2%
7 Iran, Islamic Republic of 6 0.5%
8 Sweden 4 0.3%
9 Taiwan 2 0.2%
10 Japan 2 0.2%
11 Mauritius 2 0.2%
12 Hong Kong 2 0.2%
13 Australia 2 0.2%
14 Belgium 1 0.1%
15 Ukraine 1 0.1%
16 Russia 1 0.1%