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 197 69.6%
2 United States 36 12.7%
3 Germany 24 8.5%
4 Russia 8 2.8%
5 Canada 3 1.1%
6 Brazil 2 0.7%
7 Hong Kong 2 0.7%
8 Japan 2 0.7%
9 Singapore 2 0.7%
10 Spain 2 0.7%
11 Norway 2 0.7%
12 Netherlands 1 0.4%
13 Finland 1 0.4%
14 France 1 0.4%