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 183 27.4%
2 United States 166 24.9%
3 Finland 157 23.5%
4 Germany 75 11.2%
5 Canada 59 8.8%
6 Netherlands 13 1.9%
7 India 5 0.7%
8 Iran, Islamic Republic of 3 0.4%
9 Macao 3 0.4%
10 Russia 3 0.4%
11 Saudi Arabia 1 0.1%