BPG致力于知识的发现和传播
Total Visits of This Article
2021 | 总访问次数
排名 国家/地区 数量 占比
1 United States 116 48.1%
2 China 65 27%
3 Germany 21 8.7%
4 Netherlands 15 6.2%
5 Canada 9 3.7%
6 France 5 2.1%
7 Romania 3 1.2%
8 Russia 3 1.2%
9 Italy 2 0.8%
10 Japan 1 0.4%
11 Philippines 1 0.4%