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 United States 20 36.4%
2 Germany 18 32.7%
3 China 8 14.5%
4 Nigeria 4 7.3%
5 Switzerland 1 1.8%
6 India 1 1.8%
7 Netherlands 1 1.8%
8 Australia 1 1.8%
9 Canada 1 1.8%