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 676 87.8%
2 United States 49 6.4%
3 Germany 30 3.9%
4 Sweden 4 0.5%
5 United Kingdom 2 0.3%
6 Russia 2 0.3%
7 Singapore 2 0.3%
8 Brazil 2 0.3%
9 Netherlands 1 0.1%
10 Romania 1 0.1%
11 France 1 0.1%