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 275 62.6%
2 United States 75 17.1%
3 Germany 39 8.9%
4 Canada 18 4.1%
5 Netherlands 10 2.3%
6 Russia 6 1.4%
7 United Kingdom 4 0.9%
8 Taiwan 3 0.7%
9 Hungary 3 0.7%
10 Singapore 2 0.5%
11 Serbia 1 0.2%
12 France 1 0.2%
13 Australia 1 0.2%
14 Belgium 1 0.2%