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 33 47.1%
2 China 12 17.1%
3 Netherlands 8 11.4%
4 Germany 7 10%
5 Romania 4 5.7%
6 France 3 4.3%
7 Canada 1 1.4%
8 Ukraine 1 1.4%
9 Poland 1 1.4%