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 33 42.3%
2 United States 17 21.8%
3 Hong Kong 7 9%
4 Netherlands 7 9%
5 Germany 3 3.8%
6 Canada 2 2.6%
7 Serbia 2 2.6%
8 Singapore 2 2.6%
9 Sweden 2 2.6%
10 Japan 2 2.6%
11 France 1 1.3%