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 213 64.4%
2 United States 54 16.3%
3 Germany 36 10.9%
4 United Kingdom 7 2.1%
5 Taiwan 6 1.8%
6 Sweden 4 1.2%
7 Russia 3 0.9%
8 Netherlands 2 0.6%
9 Hungary 2 0.6%
10 Ireland 1 0.3%
11 Japan 1 0.3%
12 Mauritius 1 0.3%
13 Singapore 1 0.3%