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 85 37.4%
2 China 83 36.6%
3 Netherlands 26 11.5%
4 Germany 15 6.6%
5 France 7 3.1%
6 India 4 1.8%
7 Romania 3 1.3%
8 Spain 1 0.4%
9 Iran, Islamic Republic of 1 0.4%
10 Canada 1 0.4%
11 Finland 1 0.4%