BPG致力于知识的发现和传播
Total Visits of This Article
2020 | 总访问次数
排名 国家/地区 数量 占比
1 China 21 31.8%
2 United States 13 19.7%
3 Netherlands 9 13.6%
4 Germany 9 13.6%
5 Hong Kong 5 7.6%
6 United Kingdom 5 7.6%
7 Russia 2 3%
8 Finland 1 1.5%
9 France 1 1.5%