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 United States 34 30.6%
2 China 20 18%
3 Germany 14 12.6%
4 Netherlands 14 12.6%
5 Sweden 10 9%
6 Malaysia 8 7.2%
7 Pakistan 3 2.7%
8 Canada 3 2.7%
9 France 2 1.8%
10 Austria 1 0.9%
11 Brazil 1 0.9%
12 Russia 1 0.9%