BPG致力于知识的发现和传播
Total Visits of This Article
2019 | 总访问次数
排名 国家/地区 数量 占比
1 530 69.8%
2 United States 126 16.6%
3 China 59 7.8%
4 Germany 20 2.6%
5 France 12 1.6%
6 United Kingdom 3 0.4%
7 Canada 2 0.3%
8 Taiwan 2 0.3%
9 Japan 2 0.3%
10 Mexico 1 0.1%
11 Russia 1 0.1%
12 Belgium 1 0.1%