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 157 59.5%
2 United States 49 18.6%
3 Germany 24 9.1%
4 Canada 23 8.7%
5 Sweden 4 1.5%
6 Ukraine 2 0.8%
7 United Kingdom 1 0.4%
8 Hong Kong 1 0.4%
9 Japan 1 0.4%
10 Russia 1 0.4%
11 Singapore 1 0.4%