BPG致力于知识的发现和传播
Total Visits of This Article
2017 | 总访问次数
排名 国家/地区 数量 占比
1 China 36 37.1%
2 United States 34 35.1%
3 Germany 15 15.5%
4 Nigeria 4 4.1%
5 Netherlands 2 2.1%
6 Australia 2 2.1%
7 Canada 1 1%
8 India 1 1%
9 Russia 1 1%
10 Taiwan 1 1%