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 31 43.1%
2 Germany 15 20.8%
3 China 13 18.1%
4 Nigeria 4 5.6%
5 Netherlands 3 4.2%
6 Taiwan 2 2.8%
7 Belgium 1 1.4%
8 France 1 1.4%
9 Hong Kong 1 1.4%
10 India 1 1.4%