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 United States 34 40%
2 China 27 31.8%
3 Germany 13 15.3%
4 France 3 3.5%
5 Sweden 2 2.4%
6 United Kingdom 2 2.4%
7 Spain 1 1.2%
8 Finland 1 1.2%
9 Australia 1 1.2%
10 Canada 1 1.2%