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 164 61.9%
2 Germany 51 19.2%
3 United States 35 13.2%
4 Russia 3 1.1%
5 Taiwan 3 1.1%
6 Canada 3 1.1%
7 Finland 2 0.8%
8 United Kingdom 2 0.8%
9 Switzerland 1 0.4%
10 Australia 1 0.4%