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 194 62.8%
2 United States 48 15.5%
3 Germany 35 11.3%
4 Canada 11 3.6%
5 Russia 7 2.3%
6 Kazakhstan 3 1%
7 Netherlands 3 1%
8 Poland 2 0.6%
9 Singapore 2 0.6%
10 Hong Kong 2 0.6%
11 Ireland 1 0.3%
12 Sweden 1 0.3%