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 China 44 49.4%
2 United States 22 24.7%
3 Germany 12 13.5%
4 Netherlands 5 5.6%
5 Romania 3 3.4%
6 Republic of Korea 1 1.1%
7 Iran, Islamic Republic of 1 1.1%
8 Morocco 1 1.1%