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 China 176 28.3%
2 Finland 154 24.8%
3 United States 140 22.5%
4 Germany 79 12.7%
5 Canada 46 7.4%
6 Taiwan 9 1.4%
7 Netherlands 5 0.8%
8 Malaysia 3 0.5%
9 Hong Kong 3 0.5%
10 Iran, Islamic Republic of 2 0.3%
11 Russia 2 0.3%
12 Sweden 2 0.3%
13 France 1 0.2%