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 220 29.8%
2 China 177 24%
3 United States 171 23.2%
4 Germany 77 10.4%
5 Canada 70 9.5%
6 Hong Kong 6 0.8%
7 Iran, Islamic Republic of 5 0.7%
8 Russia 5 0.7%
9 Japan 2 0.3%
10 Chile 2 0.3%
11 Czech Republic 2 0.3%
12 Netherlands 1 0.1%