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 182 66.4%
2 Germany 39 14.2%
3 United States 28 10.2%
4 Hong Kong 7 2.6%
5 Taiwan 6 2.2%
6 France 4 1.5%
7 Canada 3 1.1%
8 Finland 2 0.7%
9 Netherlands 1 0.4%
10 Russia 1 0.4%
11 United Kingdom 1 0.4%