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
1 805 83.8%
2 United States 71 7.4%
3 China 36 3.7%
4 Germany 14 1.5%
5 France 12 1.2%
6 Czech Republic 6 0.6%
7 Japan 5 0.5%
8 Ukraine 4 0.4%
9 United Kingdom 3 0.3%
10 Canada 2 0.2%
11 Europe 1 0.1%
12 Singapore 1 0.1%
13 Sweden 1 0.1%