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 235 49.7%
2 United States 168 35.5%
3 Germany 29 6.1%
4 Canada 10 2.1%
5 Taiwan 8 1.7%
6 4 0.8%
7 Hong Kong 3 0.6%
8 Netherlands 3 0.6%
9 Singapore 3 0.6%
10 Sweden 2 0.4%
11 United Kingdom 2 0.4%
12 Denmark 2 0.4%
13 France 2 0.4%
14 Russia 1 0.2%
15 Ireland 1 0.2%