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 177 60.4%
2 United States 54 18.4%
3 Germany 33 11.3%
4 Canada 7 2.4%
5 Taiwan 7 2.4%
6 Singapore 4 1.4%
7 Hong Kong 3 1%
8 Sweden 2 0.7%
9 2 0.7%
10 United Kingdom 2 0.7%
11 Australia 1 0.3%
12 Netherlands 1 0.3%