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 United States 28 41.8%
2 China 14 20.9%
3 Germany 7 10.4%
4 Russia 5 7.5%
5 United Kingdom 4 6%
6 France 3 4.5%
7 Hong Kong 3 4.5%
8 Netherlands 1 1.5%
9 Poland 1 1.5%
10 Singapore 1 1.5%