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 16 29.1%
2 United States 12 21.8%
3 Netherlands 6 10.9%
4 Canada 6 10.9%
5 Sweden 4 7.3%
6 Germany 3 5.5%
7 Hungary 3 5.5%
8 Japan 2 3.6%
9 Hong Kong 2 3.6%
10 Singapore 1 1.8%