BPG致力于知识的发现和传播
Total Visits of This Article
2018 | 总访问次数
排名 国家/地区 数量 占比
1 United States 49 50.5%
2 Sweden 15 15.5%
3 China 14 14.4%
4 Germany 6 6.2%
5 France 4 4.1%
6 Netherlands 3 3.1%
7 Republic of Korea 2 2.1%
8 Taiwan 2 2.1%
9 Indonesia 1 1%
10 Finland 1 1%