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
1 224 58.2%
2 United States 82 21.3%
3 China 37 9.6%
4 Germany 16 4.2%
5 France 14 3.6%
6 Czech Republic 3 0.8%
7 India 2 0.5%
8 Japan 2 0.5%
9 Russia 1 0.3%
10 Ukraine 1 0.3%
11 United Kingdom 1 0.3%
12 Estonia 1 0.3%
13 Hong Kong 1 0.3%