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 199 68.2%
2 United States 56 19.2%
3 Germany 22 7.5%
4 Canada 3 1%
5 Hong Kong 2 0.7%
6 Hungary 2 0.7%
7 Netherlands 2 0.7%
8 Norway 2 0.7%
9 Singapore 2 0.7%
10 United Kingdom 1 0.3%
11 Bangladesh 1 0.3%