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 45 39.5%
2 China 43 37.7%
3 Germany 7 6.1%
4 Netherlands 6 5.3%
5 Hong Kong 4 3.5%
6 Portugal 3 2.6%
7 Russia 2 1.8%
8 Taiwan 2 1.8%
9 Ireland 1 0.9%
10 Czech Republic 1 0.9%