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 155 58.9%
2 United States 48 18.3%
3 Germany 38 14.4%
4 Switzerland 4 1.5%
5 Canada 3 1.1%
6 United Kingdom 2 0.8%
7 Turkey 2 0.8%
8 Finland 2 0.8%
9 Japan 2 0.8%
10 Netherlands 2 0.8%
11 Russia 2 0.8%
12 Singapore 1 0.4%
13 Hong Kong 1 0.4%
14 Ukraine 1 0.4%