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 58 35.4%
2 China 49 29.9%
3 Germany 17 10.4%
4 Estonia 12 7.3%
5 Canada 7 4.3%
6 Netherlands 6 3.7%
7 Hong Kong 5 3%
8 Brazil 4 2.4%
9 Taiwan 3 1.8%
10 Portugal 1 0.6%
11 Russia 1 0.6%
12 Sweden 1 0.6%