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 99 63.1%
2 China 23 14.6%
3 Germany 16 10.2%
4 France 6 3.8%
5 United Kingdom 3 1.9%
6 Taiwan 3 1.9%
7 Ukraine 2 1.3%
8 Trinidad and Tobago 1 0.6%
9 Estonia 1 0.6%
10 Netherlands 1 0.6%
11 Poland 1 0.6%
12 Russia 1 0.6%