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 26 29.9%
2 China 22 25.3%
3 Germany 16 18.4%
4 Netherlands 15 17.2%
5 Russia 2 2.3%
6 Sweden 1 1.1%
7 Ukraine 1 1.1%
8 Mexico 1 1.1%
9 France 1 1.1%
10 Viet Nam 1 1.1%
11 Canada 1 1.1%