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 70 41.7%
2 United States 42 25%
3 Germany 19 11.3%
4 Netherlands 17 10.1%
5 Czech Republic 5 3%
6 France 5 3%
7 United Kingdom 4 2.4%
8 India 2 1.2%
9 Kazakhstan 1 0.6%
10 Canada 1 0.6%
11 Philippines 1 0.6%
12 Sweden 1 0.6%