BPG致力于知识的发现和传播
Total Visits of This Article
2017 | 总访问次数
排名 国家/地区 数量 占比
1 China 31 36.5%
2 United States 20 23.5%
3 Germany 10 11.8%
4 France 8 9.4%
5 Netherlands 7 8.2%
6 Nigeria 5 5.9%
7 Ukraine 1 1.2%
8 Canada 1 1.2%
9 Hong Kong 1 1.2%
10 Japan 1 1.2%