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 321 69.5%
2 United States 64 13.9%
3 Germany 35 7.6%
4 Hong Kong 13 2.8%
5 United Kingdom 5 1.1%
6 Singapore 4 0.9%
7 Sweden 3 0.6%
8 Switzerland 3 0.6%
9 Netherlands 3 0.6%
10 Serbia 2 0.4%
11 Korea, Republic of 2 0.4%
12 Taiwan 2 0.4%
13 Austria 2 0.4%
14 South Africa 1 0.2%
15 Malaysia 1 0.2%
16 Japan 1 0.2%