BPG致力于知识的发现和传播
Total Visits of This Article
2019 | 总访问次数
排名 国家/地区 数量 占比
1 United States 35 45.5%
2 Germany 18 23.4%
3 Norway 7 9.1%
4 Russia 4 5.2%
5 China 4 5.2%
6 Ukraine 2 2.6%
7 United Kingdom 2 2.6%
8 Estonia 1 1.3%
9 France 1 1.3%
10 India 1 1.3%
11 New Zealand 1 1.3%
12 Austria 1 1.3%