BPG致力于知识的发现和传播
Total Visits of This Article
2021 | 总访问次数
排名 国家/地区 数量 占比
1 China 199 57.3%
2 United States 91 26.2%
3 Germany 35 10.1%
4 Canada 4 1.2%
5 Italy 3 0.9%
6 Japan 3 0.9%
7 Ukraine 3 0.9%
8 United Kingdom 3 0.9%
9 Russia 2 0.6%
10 Albania 1 0.3%
11 Brazil 1 0.3%
12 Kenya 1 0.3%
13 Portugal 1 0.3%