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 Germany 18 35.3%
2 United States 14 27.5%
3 China 7 13.7%
4 Nigeria 4 7.8%
5 Indonesia 2 3.9%
6 Korea, Republic of 1 2%
7 Netherlands 1 2%
8 Switzerland 1 2%
9 Ukraine 1 2%
10 Australia 1 2%
11 India 1 2%