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 122 53%
2 United States 45 19.6%
3 Germany 35 15.2%
4 Netherlands 10 4.3%
5 Canada 7 3%
6 France 5 2.2%
7 Finland 2 0.9%
8 Russia 2 0.9%
9 United Kingdom 1 0.4%
10 Moldova, Republic of 1 0.4%