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 210 30.3%
2 China 164 23.6%
3 Finland 158 22.8%
4 Germany 79 11.4%
5 Canada 58 8.4%
6 Hong Kong 8 1.2%
7 Iran, Islamic Republic of 3 0.4%
8 Brazil 2 0.3%
9 Venezuela, Bolivarian Republic of 2 0.3%
10 Netherlands 2 0.3%
11 Russia 2 0.3%
12 Slovenia 2 0.3%
13 Taiwan 1 0.1%
14 Australia 1 0.1%
15 France 1 0.1%
16 Ireland 1 0.1%