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 241 60.2%
2 United States 47 11.8%
3 Germany 35 8.8%
4 Netherlands 33 8.2%
5 Canada 22 5.5%
6 Singapore 9 2.2%
7 Russia 7 1.8%
8 Malaysia 3 0.8%
9 Sweden 2 0.5%
10 United Kingdom 1 0.2%