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 United States 46 33.8%
2 China 34 25%
3 Germany 18 13.2%
4 Netherlands 10 7.4%
5 South Africa 10 7.4%
6 Hong Kong 4 2.9%
7 United Kingdom 4 2.9%
8 Taiwan 3 2.2%
9 Ireland 3 2.2%
10 India 2 1.5%
11 France 1 0.7%
12 Austria 1 0.7%