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 30 34.1%
2 United States 25 28.4%
3 Germany 12 13.6%
4 Japan 8 9.1%
5 Netherlands 3 3.4%
6 United Kingdom 3 3.4%
7 Canada 3 3.4%
8 Romania 2 2.3%
9 Republic of Korea 1 1.1%
10 Hong Kong 1 1.1%