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 26 36.1%
2 China 19 26.4%
3 Germany 15 20.8%
4 Netherlands 5 6.9%
5 Hong Kong 2 2.8%
6 Italy 1 1.4%
7 Japan 1 1.4%
8 Norway 1 1.4%
9 Republic of Korea 1 1.4%
10 Ukraine 1 1.4%