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 42 43.8%
2 China 16 16.7%
3 Germany 13 13.5%
4 Hong Kong 9 9.4%
5 Republic of Korea 3 3.1%
6 Switzerland 2 2.1%
7 United Kingdom 2 2.1%
8 Denmark 2 2.1%
9 2 2.1%
10 Japan 2 2.1%
11 Cameroon 1 1%
12 Canada 1 1%
13 Ireland 1 1%