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 190 53.2%
2 United States 96 26.9%
3 Germany 42 11.8%
4 Netherlands 8 2.2%
5 Russia 5 1.4%
6 United Kingdom 3 0.8%
7 Singapore 2 0.6%
8 Sweden 2 0.6%
9 Turkey 2 0.6%
10 Ukraine 2 0.6%
11 Canada 2 0.6%
12 Brazil 1 0.3%
13 Denmark 1 0.3%
14 Philippines 1 0.3%