BPG致力于知识的发现和传播
Total Visits of This Article
2020 | 总访问次数
排名 国家/地区 数量 占比
1 China 76 48.7%
2 United States 32 20.5%
3 Germany 15 9.6%
4 Netherlands 11 7.1%
5 Hong Kong 7 4.5%
6 United Kingdom 3 1.9%
7 Canada 3 1.9%
8 Czech Republic 2 1.3%
9 France 2 1.3%
10 Belgium 1 0.6%
11 Portugal 1 0.6%
12 Singapore 1 0.6%
13 Ukraine 1 0.6%
14 Japan 1 0.6%