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 258 63.9%
2 United States 50 12.4%
3 Germany 36 8.9%
4 Netherlands 29 7.2%
5 Canada 11 2.7%
6 Hong Kong 8 2%
7 Taiwan 6 1.5%
8 United Kingdom 2 0.5%
9 Switzerland 2 0.5%
10 Russia 1 0.2%
11 Brazil 1 0.2%