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 174 60.6%
2 United States 45 15.7%
3 Germany 35 12.2%
4 Canada 19 6.6%
5 Belgium 2 0.7%
6 Singapore 2 0.7%
7 Hong Kong 2 0.7%
8 Ireland 2 0.7%
9 Norway 2 0.7%
10 Taiwan 2 0.7%
11 Russia 1 0.3%
12 Switzerland 1 0.3%