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 42 53.8%
2 United States 11 14.1%
3 Netherlands 8 10.3%
4 Germany 8 10.3%
5 India 2 2.6%
6 Singapore 2 2.6%
7 United Arab Emirates 2 2.6%
8 Sweden 1 1.3%
9 Estonia 1 1.3%
10 France 1 1.3%