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 193 63.1%
2 United States 55 18%
3 Germany 29 9.5%
4 Hong Kong 7 2.3%
5 Taiwan 6 2%
6 Canada 5 1.6%
7 Russia 4 1.3%
8 Singapore 2 0.7%
9 Sweden 2 0.7%
10 United Kingdom 2 0.7%
11 Poland 1 0.3%