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 26 35.1%
2 China 20 27%
3 Germany 15 20.3%
4 Nigeria 4 5.4%
5 Netherlands 2 2.7%
6 Hong Kong 2 2.7%
7 India 1 1.4%
8 Iran, Islamic Republic of 1 1.4%
9 Canada 1 1.4%
10 Saudi Arabia 1 1.4%
11 Taiwan 1 1.4%