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 United States 85 42.9%
2 China 61 30.8%
3 Germany 17 8.6%
4 Taiwan 7 3.5%
5 Sweden 5 2.5%
6 Japan 5 2.5%
7 Canada 4 2%
8 United Kingdom 3 1.5%
9 Hong Kong 3 1.5%
10 Macao 2 1%
11 Netherlands 2 1%
12 Romania 1 0.5%
13 Senegal 1 0.5%
14 South Africa 1 0.5%
15 France 1 0.5%