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 220 69.6%
2 United States 37 11.7%
3 Germany 35 11.1%
4 Russia 5 1.6%
5 Netherlands 4 1.3%
6 United Kingdom 4 1.3%
7 Singapore 3 0.9%
8 India 2 0.6%
9 Malaysia 2 0.6%
10 Finland 1 0.3%
11 Sweden 1 0.3%
12 Turkey 1 0.3%
13 Ukraine 1 0.3%