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 87 66.9%
2 United States 18 13.8%
3 Germany 10 7.7%
4 Hong Kong 3 2.3%
5 Canada 3 2.3%
6 Poland 2 1.5%
7 Switzerland 2 1.5%
8 Taiwan 2 1.5%
9 United Kingdom 1 0.8%
10 Netherlands 1 0.8%
11 Brazil 1 0.8%