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 43 38.1%
2 United States 41 36.3%
3 Netherlands 11 9.7%
4 Germany 7 6.2%
5 Hong Kong 4 3.5%
6 Serbia 2 1.8%
7 Taiwan 2 1.8%
8 United Kingdom 1 0.9%
9 Portugal 1 0.9%
10 France 1 0.9%