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 163 55.6%
2 United States 61 20.8%
3 Germany 31 10.6%
4 Canada 16 5.5%
5 Russia 7 2.4%
6 United Kingdom 4 1.4%
7 Sweden 2 0.7%
8 Switzerland 2 0.7%
9 Hong Kong 2 0.7%
10 Brazil 2 0.7%
11 Georgia 2 0.7%
12 Romania 1 0.3%