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 234 53.9%
2 United States 86 19.8%
3 Germany 52 12%
4 Netherlands 33 7.6%
5 Hong Kong 9 2.1%
6 Russia 4 0.9%
7 Sweden 4 0.9%
8 United Kingdom 4 0.9%
9 Taiwan 3 0.7%
10 France 2 0.5%
11 Japan 1 0.2%
12 Singapore 1 0.2%
13 Canada 1 0.2%