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 20 36.4%
2 Germany 13 23.6%
3 China 11 20%
4 Netherlands 5 9.1%
5 Republic of Korea 2 3.6%
6 Romania 2 3.6%
7 Finland 1 1.8%
8 Venezuela, Bolivarian Republic of 1 1.8%