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 21 38.2%
2 Germany 13 23.6%
3 China 9 16.4%
4 Netherlands 4 7.3%
5 Romania 3 5.5%
6 Republic of Korea 2 3.6%
7 Israel 1 1.8%
8 Morocco 1 1.8%
9 United Kingdom 1 1.8%